GPA STD 2145 - Table of Physical Properties for Hydrocarbons and Other

Table of Physical Properties for
Hydrocarbons and Other Compounds of Interest to the
Natural Gas and Natural Gas Liquids Industries
(Includes data previously published in Technical Publication TP-17, Table of Physical
Properties of Hydrocarbons for Extended Analysis of Natural Gases)
Adopted as a Standard 1942
Revised 2016
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GPA Midstream Standard 2145-16
FOREWORD
This standard provides the gas processing industry with a convenient compilation of authoritative
numerical values for hydrocarbons and other compounds occurring in natural gas and natural gas
liquids as well as other compounds of interest to the industry. The physical properties selected
are those considered most valuable for engineering and analytical computations. Most properties
are based upon two NIST Standard Reference Databases: the Web Thermo Tables, WTT (NIST
SRSD-3), and the Reference Fluid Thermodynamic and Transport Properties Database,
REFPROP 9.1 (NIST SRD-23). The data in this publication were checked, evaluated, and
recalculated when necessary by the Applied Chemicals and Materials Division of the Material
Measurement Laboratory at NIST. The listed flammability limits and octane numbers were not
evaluated at NIST and sources for these properties are provided in the references.
Methodology
The process for revising this and future versions of GPA-2145 has been updated. Current values
will be used in all subsequent revisions, except when a newly accepted and confirmed equation
of state or substantiated improved measurements becomes available. In these situations, the
following items determine when changes will be made.
a) If any property for a component falls outside the uncertainty of the new EOS or
substantiated measurements, all properties will be updated for that component.
b) If all existing values for a component fall within the uncertainty of the new EOS or
substantiated measurements, no changes will be made.
Summary of changes in this revision of GPA-2145
a) For helium, all values were updated based on a new equation of state finalized in 2015.
b) For propylene, the heat capacities were updated based on the final equation of state.
c) The “volume of air required to burn one volume of gas” has been updated to reflect the
revised concentration of oxygen in air (as explained in the Properties of Air section at the
end of this standard).
d) The definition of relative density was modified based solely on a fixed reference value
(28.9625 g/mol), not on the molar mass of air.
e) The main tables now list pure fluids only; all properties for air were removed from the
tables and included in the Properties of Air section at the end of this standard.
f) All fluids from TP-17 were added, and properties displayed here are based on the format
from that version. Most of the properties for the fluids in the 1998 version of TP-17
(excluding the fluids in 2145-09) have changed; the new values are based on properties
calculated from the equations of state available in the REFPROP program (reference 2)
or from the TRC database (reference 3). The main tables and the extended tables list the
same properties.
g) The fluids in 2145-09 are included here in their original format, as well as in the
transposed TP-17 format.
GPA 2145
Page ii
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h) Additional properties from TP-17 are included; these are the chemical formula, acentric
factor, critical density, compressibility factor at 60 °F, liquid net heating value, refractive
index, and temperature coefficient of density.
i) Other properties now appearing in the main tables include the specific volume as an ideal
gas, vapor pressure at 60 °F, and summation factor for a new compressibility formula.
All fluids in the GPSA Engineering Data Book are now included in this revision of GPA-2145.
Property values for compounds listed here in GPA 2145-16 supersede those listed in the GPSA
Engineering Data Book, 13th edition, and all earlier editions.
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DISCLAIMER
GPA Midstream Association publications necessarily address problems of a general nature and
may be used by anyone desiring to do so. Every effort has been made by GPA Midstream to
assure accuracy and reliability of the information contained in this publication. Each person who
uses or refers to this publication will need to make their own decisions based on consideration of
their own internal best practices, recommendations, and engineering judgment. GPA Midstream
and its members do not guarantee the accuracy, completeness, efficacy, timeliness, or correct
sequencing of such information, including without limitation, the reference material and
information of the various other industry associations that may be provided herein. Use of the
information provided in this publication is voluntary, and reliance on it should only be
undertaken after an independent review of its accuracy, completeness, efficacy, timeliness, and
consideration of the applicability of any local, state, and federal laws and regulations.
It is not the intent of GPA Midstream to assume the duties of employers, manufacturers, or
suppliers to warn and properly train employees, or others exposed, concerning health and safety
risks or precautions. Reference herein to any specific commercial product, process, or service by
trade name, trademark, service mark, manufacturer, or otherwise does not constitute or imply
endorsement, recommendation, or favoring by GPA Midstream.
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GPA Midstream makes no representation, warranty, or guarantee in connection with this
publication and hereby expressly disclaims any liability or responsibility for loss or damage
resulting from its use or for the violation of any federal, state or municipal regulation with which
this publication may conflict, or for any infringement of letters of patent regarding apparatus,
equipment, or method so covered.
“Copyright© 2016 by GPA Midstream Association. All rights reserved.
No part of this Report may be reproduced without the written consent
of GPA Midstream Association.”
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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
a
b
c
b
h
b,d
e
f
b,d,g
p
b,d,i
b,d,i
j
b,k
b,m
n
4
5,o
Compound
Formula
Molar Mass
Boiling Temperature (°F, 14.696 psia)
Triple Point Temperature (°F)
Vapor Pressure
60 °F (psia)
100 °F (psia)
Critical Constants
Temperature (°F)
Pressure (psia)
Density (lbm/ft3)
Acentric Factor
Density of Liquid (60 °F, 14.696 psia)
Relative density (60 °F/60 °F)
API gravity
Density (lbm/gal)
Temp. coef. of density (1/°F, at 60 °F sat.)
Density of Ideal Gas (60 °F, 14.696 psia)
Relative density
Volume (ft3/lbm)
Density (lbm/1000 ft3)
Volume (60 °F, 14.696 psia)
Liquid (gal/lbmol)
ft3 ideal gas/gal liquid
Ratio, ideal gas/liquid
Summation Factor (60 °F)
Z=1-P*b2 (1/psia0.5)
Z=1-P/P0*b2 (P0=14.696 psia)
Compressibility Factor at 60 °F (sat)
Gross Heating Value (60 °F, ideal reaction)
Fuel as Liquid (Btu/lbm)
Fuel as Liquid (Btu/gal)
Fuel as Ideal gas (Btu/lbm)
Fuel as Ideal gas (Btu/ft3)
Fuel as Ideal gas (Btu/gal)
Net Heating Value (60 °F, ideal reaction)
Fuel as Liquid (Btu/lbm)
Fuel as Ideal gas (Btu/ft3)
Volume of Air Required to Burn
One Volume of Ideal Gas
Heat of Vaporization (14.696 psia)
Btu/lbm
Specific Heat (60 °F)
Cp [Btu/(lbm °F)] (ideal gas)
Cv [Btu/(lbm °F)] (ideal gas)
C
 [Btu/ (lbm °F)]
k=Cp/Cv
Refractive Index , nD (60 °F)
Flammability Limits (100 °F, 14.696 psia)
Lower (volume % in air)
Upper (volume % in air)
Octane Number
Motor Method D-357
Research Method D-908
methane
CH4
16.0425
-258.66
-296.42
ethane
C2H6
30.0690
-127.44
-297.01
propane
C3H8
44.0956
-43.80
-305.72
isobutane
C4H10
58.1222
10.85
-254.96
n-butane
C4H10
58.1222
31.12
-216.85
isopentane
C5H12
72.1488
82.09
-256.90
n-pentane
C5H12
72.1488
96.91
-201.42
495.62
800
107.71
188.62
38.225
72.644
26.027
51.567
9.417
20.474
6.888
15.576
-116.66
667.1
10.154
0.0114
89.91
706.7
12.871
0.0995
206.13
616.6
13.764
0.1521
274.39
526.3
14.078
0.1835
305.56
550.6
14.078
0.2008
368.96
489.9
14.733
0.2274
385.79
488.8
14.483
0.2515
0.3
340
2.5
0.35628
265.66
2.9704
-0.00733
0.50719
147.49
4.2285
-0.00167
0.56283
119.91
4.6925
-0.00121
0.58420
110.71
4.8706
-0.00108
0.62514
94.848
5.2120
-0.00089
0.63071
92.850
5.2584
-0.00086
0.5539
23.6549
42.27
1.0382
12.6204
79.24
1.5225
8.6059
116.20
2.0068
6.5290
153.16
2.0068
6.5290
153.16
2.4911
5.2597
190.12
2.4911
5.2597
190.12
6.417
59.138
442.38
10.123
37.488
280.43
10.428
36.391
272.22
12.386
30.637
229.18
11.933
31.801
237.89
13.843
27.414
205.07
13.721
27.658
206.89
0.0116
0.04438
0.0238
0.0913
0.5788
0.0347
0.1329
0.8499
0.0441
0.1690
0.9188
0.0470
0.1801
0.9386
0.0576
0.2206
0.9677
0.0606
0.2323
0.9740
23892.
1010.0
59729.
22185.
65897.
22334.
1769.7
66340.
21491.
90875.
21654.
2516.1
91563.
21081.
98924.
21232.
3251.9
99630.
21137.
102950.
21300.
3262.3
103740.
20891.
108880.
21044.
4000.9
109680.
20923.
110020.
21085.
4008.7
110870.
909.4
20281.
1619.
19760.
2315.
19440.
3000.
19495.
3011.
19303.
3699.
19335.
3707.
9.552
16.715
23.879
31.043
31.043
38.206
38.206
219.6
210.4
183.0
157.0
165.8
147.6
153.7
0.5266
0.4028
0.4079
0.3418
0.9664
1.1932
1.00072
0.3873
0.3423
0.6183
1.1316
1.00103
0.3866
0.3525
0.5641
1.0969
1.00123
0.3949
0.3608
0.5692
1.0947
1.00133
0.3828
0.3553
0.5311
1.0775
1.35639
0.3879
0.3603
0.5427
1.0764
1.35981
5000
1.3073
1.00042
5.0
15.0
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2.9
13.0
2.0
9.5
1.8
8.5
1.5
9.0
1.3
8.0
1.4
8.3
+0.05
+1.6
97.1
+1.8
97.6
+0.1
89.6
93.8
90.3
92.3
62.6
61.7
Page 1
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Notes
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
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Compound
Formula
Molar Mass
Boiling Temperature (°F, 14.696 psia)
Triple Point Temperature (°F)
Vapor Pressure
60 °F (psia)
100 °F (psia)
Critical Constants
Temperature (°F)
Pressure (psia)
3
Density (lbm/ft )
Acentric Factor
Density of Liquid (60 °F, 14.696 psia)
Relative density (60 °F/60 °F)
API gravity
Density (lbm/gal)
Temp. coef. of density (1/°F, at 60 °F sat.)
Density of Ideal Gas (60 °F, 14.696 psia)
Relative density
3
Volume (ft /lbm)
3
Density (lbm/1000 ft )
Volume (60 °F, 14.696 psia)
Liquid (gal/lbmol)
3
ft ideal gas/gal liquid
Ratio, ideal gas/liquid
Summation Factor (60 °F)
2
0.5
Z=1-P*b (1/psia )
2
Z=1-P/P0*b (P0=14.696 psia)
Compressibility Factor at 60 °F (sat)
Gross Heating Value (60 °F, ideal reaction)
Fuel as Liquid (Btu/lbm)
Fuel as Liquid (Btu/gal)
Fuel as Ideal gas (Btu/lbm)
3
Fuel as Ideal gas (Btu/ft )
Fuel as Ideal gas (Btu/gal)
Net Heating Value (60 °F, ideal reaction)
Fuel as Liquid (Btu/lbm)
3
Fuel as Ideal gas (Btu/ft )
Volume of Air Required to Burn
One Volume of Ideal Gas
Heat of Vaporization (14.696 psia)
Btu/lbm
Specific Heat (60 °F)
Cp [Btu/(lbm °F)] (ideal gas)
Cv [Btu/(lbm °F)] (ideal gas)
Cσ [Btu/(lbm °F)] (sat. liquid)
k=Cp/Cv
Refractive Index , nD (60 °F)
Flammability Limits (100 °F, 14.696 psia)
Lower (volume % in air)
Upper (volume % in air)
Octane Number
Motor Method D-357
Research Method D-908
n-hexane
C6H14
86.1754
155.68
-139.58
n-heptane
C7H16
100.2019
209.08
-131.08
n-octane
C8H18
114.2285
258.12
-70.20
n-nonane
C9H20
128.2551
303.37
-64.21
n-decane
C10H22
142.2817
345.42
-21.37
1.914
4.961
0.5413
1.619
0.1546
0.5349
0.04535
0.1809
0.01335
0.06148
453.8
436.9
14.557
0.2986
512.56
396.8
14.483
0.3494
564.22
360.7
14.664
0.3971
610.52
330.8
14.492
0.4433
652.19
305.0
14.567
0.4884
48.56
731.3
13.374
0.0866
195.91
660.6
14.335
0.1461
0.66406
81.582
5.5364
-0.00076
0.68823
74.101
5.7379
-0.00068
0.70655
68.768
5.8907
-0.00063
0.72224
64.418
6.0215
-0.00061
0.73458
61.127
6.1244
-0.00059
0.56820
117.53
4.7372
0.52260
139.260
4.3571
-0.00180
2.9754
4.4036
227.09
3.4597
3.7872
264.05
3.9440
3.3221
301.01
4.4283
2.9588
337.97
4.9126
2.6671
374.93
0.9686
13.5273
73.92
1.4529
9.0182
110.89
15.565
24.380
182.38
17.463
21.730
162.56
19.391
19.570
146.39
21.300
17.816
133.28
23.232
16.334
122.19
5.9219
64.081
479.36
9.6578
39.293
293.93
0.0776
0.2973
0.9884
0.0951
0.3646
0.9951
0.1128
0.4326
0.9980
0.1307
0.5009
0.9992
0.1556
0.5967
0.9997
0.0207
0.0795
0.0327
0.1254
0.8345
20783.
115060.
20943.
4755.9
115950.
20680.
118660.
20839.
5502.6
119570.
20601.
121350.
20760.
6249.0
122290.
20543.
123700.
20701.
6996.3
124650.
20494.
125510.
20651.
7742.9
126480.
21640.
1599.7
102515.
20875.
90954.
21040.
2333.0
91672.
19233.
4404.
19155.
5100.
19096.
5796.
19054.
6493.
19018.
7190.
1499.
19514.
2182.
45.370
52.534
59.697
66.861
74.025
14.327
21.491
144.0
136.2
129.9
124.1
118.8
207.4
188.7
0.3857
0.3626
0.5285
1.0635
1.37673
0.3841
0.3643
0.5268
1.0544
1.38995
0.3829
0.3655
0.5240
1.0476
1.39960
0.3820
0.3665
0.5192
1.0423
1.40719
0.3813
0.3673
0.5155
1.0380
1.41384
0.3573
0.2865
0.3572
0.3101
0.6036
1.1519
1.31616
1.1
7.7
1.0
7.0
0.8
6.5
0.7
5.6
0.7
5.4
2.9
32.0
2.1
11.1
75.6
+0.03
84.9
+0.2
26
24.8
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ethylene
C2H4
28.0532
-154.79
-272.49
propylene
C3H6
42.0797
-53.72
-301.35
131.3
227.3
1.2471
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PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Formula
Molar Mass
Boiling Temperature (°F, 14.696 psia)
Triple Point Temperature (°F)
Vapor Pressure
60 °F (psia)
100 °F (psia)
Critical Constants
Temperature (°F)
Pressure (psia)
3
Density (lbm/ft )
Acentric Factor
Density of Liquid (60 °F, 14.696 psia)
Relative density (60 °F/60 °F)
API gravity
Density (lbm/gal)
Temp. coef. of density (1/°F, at 60 °F sat.)
Density of Ideal Gas (60 °F, 14.696 psia)
Relative density
3
Volume (ft /lbm)
3
Density (lbm/1000 ft )
Volume (60 °F, 14.696 psia)
Liquid (gal/lbmol)
3
ft ideal gas/gal liquid
Ratio, ideal gas/liquid
Summation Factor (60 °F)
2
0.5
Z=1-P*b (1/psia )
2
Z=1-P/P0*b (P0=14.696 psia)
Compressibility Factor at 60 °F (sat)
Gross Heating Value (60 °F, ideal reaction)
Fuel as Liquid (Btu/lbm)
Fuel as Liquid (Btu/gal)
Fuel as Ideal gas (Btu/lbm)
3
Fuel as Ideal gas (Btu/ft )
Fuel as Ideal gas (Btu/gal)
Net Heating Value (60 °F, ideal reaction)
Fuel as Liquid (Btu/lbm)
3
Fuel as Ideal gas (Btu/ft )
Volume of Air Required to Burn
One Volume of Ideal Gas
Heat of Vaporization (14.696 psia)
Btu/lbm
Specific Heat (60 °F)
Cp [Btu/(lbm °F)] (ideal gas)
Cv [Btu/(lbm °F)] (ideal gas)
Cσ [Btu/(lbm °F)] (sat. liquid)
k=Cp/Cv
Refractive Index , nD (60 °F)
Flammability Limits (100 °F, 14.696 psia)
Lower (volume % in air)
Upper (volume % in air)
Octane Number
Motor Method D-357
Research Method D-908
carbon
dioxide
CO2
44.0095
-109.24
-69.81
hydrogen
sulfide
H2S
34.0809
-76.54
-121.81
747.8
230.4
395.0
carbon
monoxide
CO
28.0101
-312.72
-336.98
87.76
1070.0
29.191
0.2239
211.91
1305.3
21.680
0.1005
-232.53
492.5
19.559
0.0372
-181.43
731.4
27.228
0.0222
-450.32
33.115
4.3437
-0.3836
705.11
3200.1
20.102
0.3443
-400.01
188.0
1.952
-0.2187
-220.52
506.8
18.972
0.0497
0.81716
41.660
6.8129
-0.00801
0.79886
45.628
6.6602
-0.00171
0.80687
43.868
6.7271
1.1423
-7.630
9.5238
0.12479
1002.4
1.0404
1.00000
10.000
8.3372
-0.00009
0.070918
1863.8
0.59126
0.79399
46.714
6.6197
1.5195
8.6227
115.97
1.1767
11.1348
89.81
0.9672
13.5465
73.82
1.1048
11.8593
84.322
0.1382
94.8090
10.55
0.62202
21.0645
47.473
0.0696
188.247
5.31
0.9671
13.5481
73.81
6.4598
58.746
439.45
5.1171
74.16
554.76
4.1643
91.128
681.69
3.3599
112.95
844.89
3.8471
98.641
737.88
2.1608
175.62
1313.7
3.4095
111.30
832.60
4.2313
89.684
670.88
0.0195
0.0748
0.5764
0.0239
0.0917
0.8460
0.00442
0.01696
0.0072
0.02752
oxygen
O2
31.9988
-297.33
-361.82
helium
He
4.0026
-452.07
-455.75
water
H2O
18.0153
211.95
32.018
0.25640
0.9505
0.06510
0.2496
0.9989
6892.4
45905.
7094.0
637.10
47248.
1059.8
50.310
8835.4
0.0056
0.0216
61022.
324.2
36080.
4342.
320.5
28745.
6332.
586.79
273.9
320.5
7.164
2.388
2.388
246.5
234.9
85.63
91.60
8.841
970.12
192.9
92.3
0.1992
0.1541
0.6857
1.2929
1.22624
0.2383
0.1800
0.5088
1.3236
0.2483
0.1774
0.2189
0.1569
1.2404
0.7442
3.4076
2.4225
0.2484
0.1775
1.3996
1.3956
1.6667
0.44478
0.33455
1.0003
1.3295
1.33416
1.4067
1.3994
4.0
74.2
12.5
74.2
4.3
45.5
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
hydrogen
H2
2.0159
-423.01
-434.55
nitrogen
N2
28.0134
-320.43
-346.00
Page 3
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Compound
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
2-methylpropene
1-butene
(E)-2-butene
Formula
CH4
C2H6
C3H8
C4H10
C4H10
C5H12
C5H12
C6H14
C7H16
C8H18
C9H20
C10H22
C2H4
C3H6
CO2
H2S
N2
O2
He
H2O
H2
CO
HCl
COS
Cl2
NH3
SO2
CH4O
C2H6O
C2H2
C3H4
C3H4
C4H6
C4H6
C4H8
C4H8
C4H8
a
Molar
Mass
b
Boiling
Temp.
14.696
psia
16.0425
30.0690
44.0956
58.1222
58.1222
72.1488
72.1488
86.1754
100.2019
114.2285
128.2551
142.2817
28.0532
42.0797
44.0095
34.0809
28.0134
31.9988
4.0026
18.0153
2.0159
28.0101
36.4609
60.0751
70.9060
17.0305
64.0638
32.0419
46.0684
26.0373
40.0639
40.0639
54.0904
54.0904
56.1063
56.1063
56.1063
c
Triple
Point
Temp.
-29.43
-13.24
23.80
51.73
19.39
20.65
33.58
GPA 2145
60 °F
°F
-258.66
-127.44
-43.80
10.85
31.12
82.09
96.91
155.68
209.08
258.12
303.37
345.42
-154.79
-53.72
-109.24
-76.54
-320.43
-297.33
-452.07
211.95
-423.01
-312.72
-120.95
-58.29
-29.15
-27.99
13.97
148.07
173.16
b
Vapor Pressure
-296.42
-297.01
-305.72
-254.96
-216.85
-256.90
-201.42
-139.58
-131.08
-70.20
-64.21
-21.37
-272.49
-301.35
-69.81
-121.81
-346.00
-361.82
-455.75
32.018
-434.55
-336.98
-173.45
-217.91
-149.70
-107.78
-103.81
-143.57
-173.47
-114.68
-213.61
-152.77
-163.98
-213.15
-221.35
-301.63
-157.99
psia
495.62
107.71
38.225
26.027
9.417
6.888
1.914
0.5413
0.1546
0.04535
0.01335
100 °F
5000
800
188.62
72.644
51.567
20.474
15.576
4.961
1.619
0.5349
0.1809
0.06148
131.3
747.8
230.4
227.3
0.25640
0.9505
556.4
145.9
86.50
107.6
41.01
1.481
0.6498
564.4
88.28
63.75
30.21
17.36
32.88
32.03
24.92
912.0
251.8
157.5
212.0
85.53
4.641
2.310
395.0
160.6
120.4
59.44
35.95
64.02
62.42
49.90
Page 4
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
h
Acentric
Factor
Critical Constants
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Temp.
°F
-116.66
89.91
206.13
274.39
305.56
368.96
385.79
453.8
512.56
564.22
610.52
652.19
48.56
195.91
87.76
211.91
-232.53
-181.43
-450.32
705.11
-400.01
-220.52
124.52
222.12
290.69
270.05
315.48
464.41
466.81
95.44
249.31
264.61
305.48
362.03
292.89
295.05
311.83
Pressure
psia
667.1
706.7
616.6
526.3
550.6
489.9
488.8
436.9
396.8
360.7
330.8
305.0
731.3
660.6
1070.0
1305.3
492.5
731.4
33.115
3200.1
188.0
506.8
1202.1
923.7
1157.1
1643.7
1143.5
1191.6
909.1
900.1
910.4
816.0
619.4
702.9
581.6
580.9
584.1
Density
3
lbm/ft
10.154
12.871
13.764
14.078
14.078
14.733
14.483
14.557
14.483
14.664
14.492
14.567
13.374
14.335
29.191
21.680
19.559
27.228
4.3437
20.102
1.952
18.972
26.859
27.783
34.014
14.047
32.775
17.573
17.054
13.825
15.183
15.290
15.157
15.448
14.606
14.851
14.756
0.0114
0.0995
0.1521
0.1835
0.2008
0.2274
0.2515
0.2986
0.3494
0.3971
0.4433
0.4884
0.0866
0.1461
0.2239
0.1005
0.0372
0.0222
-0.3836
0.3443
-0.2187
0.0497
0.1282
0.0977
0.0875
0.2560
0.2557
0.5625
0.6461
0.1983
0.1865
0.2036
0.1890
0.1816
0.1926
0.1919
0.2101
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
Compound
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
Methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
3-methylhexane
3-ethylpentane
styrene
ethylbenzene
p-xylene
m-xylene
Formula
C4H8
C5H8
C5H10
C5H10
C5H10
C5H10
C5H10
C5H10
C5H10
C5H12
C6H6
C6H12
C6H12
C6H14
C6H14
C6H14
C6H14
C7H8
C7H14
C7H14
C7H14
C7H14
C7H14
C7H14
C7H14
C7H14
C7H16
C7H16
C7H16
C7H16
C7H16
C7H16
C7H16
C7H16
C8H8
C8H10
C8H10
C8H10
a
Molar
Mass
b
Boiling
Temp.
14.696
psia
56.1063
68.1170
70.1329
70.1329
70.1329
70.1329
70.1329
70.1329
70.1329
72.1488
78.1118
84.1595
84.1595
86.1754
86.1754
86.1754
86.1754
92.1384
98.1861
98.1861
98.1861
98.1861
98.1861
98.1861
98.1861
98.1861
100.2019
100.2019
100.2019
100.2019
100.2019
100.2019
100.2019
100.2019
104.1491
106.1650
106.1650
106.1650
b
Vapor Pressure
60 °F
38.70
93.29
68.09
85.93
87.97
97.39
98.47
101.19
120.65
49.11
176.12
161.22
177.29
121.49
136.34
140.38
145.85
231.07
190.05
195.32
197.07
197.33
211.09
213.55
218.23
245.82
174.51
176.84
177.52
186.87
193.64
193.95
197.16
200.19
293.47
277.10
280.98
282.32
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
c
Triple
Point
Temp.
°F
-217.93
-230.96
-271.15
-265.24
-215.55
-220.36
-240.43
-208.71
-136.21
2.21
41.94
-224.35
44.08
-146.12
-198.54
-244.39
-261.20
-139.27
-92.97
-208.95
-208.60
-181.21
-64.61
-195.81
-217.16
17.56
-190.67
-182.49
-12.21
-209.89
-190.80
-180.82
-182.88
-181.39
-23.18
-138.91
55.85
-54.13
psia
22.60
7.411
12.50
8.675
8.272
6.773
6.619
6.262
4.174
18.19
1.170
1.741
1.213
4.236
3.057
2.729
2.439
0.3319
0.9351
0.8253
0.7931
0.7864
0.5687
0.5589
0.4788
0.2543
1.317
1.226
1.288
1.028
0.8430
0.7987
0.7454
0.7012
0.06717
0.1057
0.09720
0.09184
100 °F
45.90
16.68
26.42
19.12
18.44
15.44
15.13
14.37
9.919
36.71
3.226
4.506
3.267
9.860
7.410
6.772
6.103
1.033
2.566
2.294
2.217
2.201
1.652
1.608
1.415
0.8004
3.493
3.296
3.379
2.773
2.346
2.272
2.130
2.013
0.2497
0.3720
0.3434
0.3275
Page 5
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
h
Acentric
Factor
Critical Constants
Temp.
°F
324.68
395.15
355.17
376.86
380.93
393.17
395.13
386.96
461.43
321.06
551.97
499.34
536.81
420.70
440.62
436.19
448.54
605.48
542.93
532.13
533.93
539.33
559.13
570.28
565.40
628.00
477.45
476.25
496.61
505.79
507.77
494.99
503.97
513.53
683.69
651.15
649.43
650.73
Pressure
psia
612.9
552.3
509.1
514.4
528.9
526.9
535.4
495.3
664.7
463.5
711.7
548.2
591.8
449.9
454.4
440.9
453.0
598.5
553.8
485.6
486.8
503.6
509.6
507.7
492.7
559.6
401.5
396.6
427.1
426.2
422.2
396.5
406.3
420.7
563.2
525.4
512.2
512.7
Density
3
lbm/ft
14.865
14.311
14.358
14.546
14.862
14.713
14.515
14.658
17.163
14.728
19.023
16.334
16.939
14.740
14.938
14.606
14.591
18.228
16.292
16.087
15.990
16.132
16.428
16.668
16.237
17.331
15.045
14.983
15.462
15.108
15.834
14.850
15.329
15.045
18.238
18.167
17.854
17.663
0.2024
0.2298
0.2065
0.2357
0.2408
0.2483
0.2536
0.2815
0.2019
0.1961
0.2109
0.2290
0.2096
0.2323
0.2464
0.2797
0.2719
0.2657
0.2393
0.2605
0.2657
0.2584
0.2678
0.2378
0.2707
0.2433
0.2849
0.3004
0.2478
0.2664
0.2949
0.3287
0.3189
0.3108
0.3026
0.3050
0.3240
0.3261
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
Compound
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
2,3,4-trimethylpentane
2,3-dimethylhexane
2-methylheptane
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
3-methylheptane
isopropylbenzene
propylbenzene
Formula
C8H10
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C9H12
C9H12
a
Molar
Mass
b
Boiling
Temp.
14.696
psia
106.1650
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
120.1916
120.1916
b
Vapor Pressure
60 °F
291.87
220.74
229.58
230.10
236.65
242.07
243.80
246.78
247.10
248.10
249.09
250.12
250.21
250.69
252.26
255.71
255.95
259.49
262.43
265.45
267.63
269.15
304.05
210.57
224.26
228.34
228.89
229.67
233.50
236.21
240.05
243.73
243.83
243.86
245.31
246.01
306.22
318.55
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
c
Triple
Point
Temp.
°F
-13.30
-224.57
-203.48
-170.86
-7.04
-204.25
-171.18
-34.42
-27.96
-130.09
-163.75
-226.84
-177.65
-125.28
-103.92
-168.63
-158.69
-57.70
-179.22
-168.31
58.68
-161.28
-186.14
-132.05
-170.41
-195.09
-164.81
-164.10
-185.79
-184.86
-140.81
-147.15
psia
0.07295
0.4783
0.3750
0.3771
0.3303
0.2855
0.2691
0.2666
0.2645
0.2515
0.2467
0.2416
0.2504
0.2290
0.2263
0.2088
0.2034
0.1863
0.1668
0.1668
0.1392
0.1460
0.06020
0.5966
0.4020
0.3558
0.3565
0.3806
0.3358
0.3171
0.2709
0.2349
0.2348
0.2496
0.2300
0.2230
0.05005
0.03623
100 °F
0.2658
1.396
1.135
1.134
1.002
0.8832
0.8408
0.8232
0.8190
0.7852
0.7714
0.7567
0.7753
0.7270
0.7161
0.6646
0.6533
0.6026
0.5506
0.5431
0.4730
0.4860
0.2228
1.710
1.223
1.103
1.100
1.144
1.032
0.9779
0.8622
0.7675
0.7665
0.7990
0.7499
0.7318
0.1906
0.1431
Page 6
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
h
Acentric
Factor
Critical Constants
Temp.
°F
674.80
555.53
557.33
560.93
582.53
578.93
578.93
598.12
616.73
600.35
595.13
596.93
600.53
611.33
593.33
626.07
598.14
629.33
618.53
630.41
616.73
632.75
705.57
519.53
530.11
530.34
535.72
554.56
551.90
559.80
554.54
547.66
551.39
564.19
558.14
554.96
676.41
689.24
Pressure
psia
542.1
430.3
416.1
414.2
443.7
416.0
414.0
440.5
501.4
449.3
428.9
428.9
428.9
485.2
414.0
497.7
417.6
498.3
461.8
464.9
447.3
476.6
514.8
373.0
366.6
360.8
370.9
395.4
385.1
392.5
381.2
362.9
368.6
390.4
377.8
368.8
462.2
464.3
Density
3
lbm/ft
17.792
15.875
15.745
15.877
16.228
15.971
16.085
15.970
16.376
15.727
15.917
16.110
16.066
16.315
16.150
16.131
16.366
16.188
16.280
16.496
16.042
16.066
17.086
15.118
14.842
14.705
14.650
16.232
16.086
15.439
15.232
14.608
14.899
15.295
15.605
15.269
17.781
17.024
0.3118
0.2731
0.3058
0.2920
0.2722
0.2923
0.3005
0.2679
0.2527
0.2742
0.2818
0.2808
0.2681
0.2777
0.2931
0.2605
0.2990
0.2695
0.2962
0.2722
0.3201
0.2939
0.2498
0.3035
0.3370
0.3562
0.3468
0.2967
0.3210
0.3117
0.3464
0.3809
0.3708
0.3383
0.3604
0.3690
0.3219
0.3449
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
Compound
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
2,4,4-trimethylhexane
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
Formula
C9H12
C9H12
C9H12
C9H12
C9H12
C9H12
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
a
Molar
Mass
b
Boiling
Temp.
14.696
psia
120.1916
120.1916
120.1916
120.1916
120.1916
120.1916
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
c
Triple
Point
Temp.
60 °F
322.33
323.57
328.56
329.26
336.87
348.94
274.16
277.89
281.43
285.09
286.80
287.57
289.86
290.37
293.73
294.07
298.58
301.47
304.08
309.94
313.13
314.07
324.69
252.03
255.23
260.00
267.12
267.54
270.47
270.71
272.74
274.36
274.76
275.86
278.06
278.74
281.39
284.44
GPA 2145
b
Vapor Pressure
°F
-140.24
-81.11
-48.44
-113.30
-46.81
-13.58
-91.39
-47.29
-124.87
-88.26
-20.52
-175.41
-122.24
-129.86
-162.30
-138.91
58.91
-87.75
-158.55
-188.41
-172.05
-198.20
-171.49
-153.62
-178.20
14.45
psia
0.03088
0.02980
0.02812
0.02607
0.02050
0.01519
0.1496
0.1264
0.1053
0.09680
0.1090
0.08627
0.09110
0.08425
0.07879
0.09475
0.07141
0.06637
0.05889
0.05110
0.04087
0.04453
0.04307
0.2319
0.1881
0.1811
0.1532
0.1443
0.1244
0.1220
0.1275
0.1099
0.1129
0.1085
0.1147
0.1046
0.1103
0.1052
100 °F
0.1251
0.1221
0.1105
0.1072
0.08713
0.06610
0.4849
0.4227
0.3706
0.3384
0.3661
0.3081
0.3178
0.2994
0.2813
0.3209
0.2563
0.2407
0.2177
0.1900
0.1601
0.1704
0.1580
0.7304
0.6224
0.5918
0.5079
0.4871
0.4337
0.4265
0.4358
0.3896
0.3966
0.3833
0.3949
0.3682
0.3782
0.3621
Page 7
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
h
Acentric
Factor
Critical Constants
Temp.
°F
689.45
692.68
687.48
702.77
708.74
736.83
623.93
629.33
614.93
624.22
638.33
623.93
634.73
631.13
634.73
658.13
650.93
649.13
649.13
678.29
665.33
675.77
712.13
574.63
566.12
584.33
616.73
584.69
578.75
578.30
593.33
581.99
585.59
586.49
597.83
602.33
613.31
633.85
Pressure
psia
456.0
469.1
453.7
465.2
473.0
500.4
389.5
406.2
382.7
384.2
384.2
384.2
384.6
384.6
383.7
402.0
399.2
385.5
384.2
443.8
419.0
414.8
436.0
360.4
356.4
368.4
429.0
352.2
342.2
340.8
353.9
342.0
342.1
341.1
343.2
364.9
362.3
397.7
Density
3
lbm/ft
16.988
16.837
17.254
16.976
17.153
17.752
15.940
16.056
15.790
15.923
15.891
16.064
16.083
15.307
16.113
16.343
15.925
16.287
16.265
16.298
15.884
16.235
15.858
15.062
14.569
14.857
15.114
14.956
14.769
14.683
14.657
14.622
14.633
14.827
14.950
15.126
15.205
15.590
0.3575
0.3654
0.3993
0.3537
0.3817
0.3649
0.2765
0.2930
0.3469
0.3316
0.2868
0.3474
0.3181
0.3351
0.3394
0.2715
0.3195
0.3291
0.3423
0.3214
0.3657
0.3262
0.2725
0.3119
0.3641
0.3287
0.3013
0.3550
0.3882
0.3901
0.3520
0.3987
0.3848
0.3866
0.3525
0.3633
0.3302
0.3044
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
Compound
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
Formula
C9H20
C9H20
C9H20
C9H20
C9H20
C10H8
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H20
C10H20
C10H20
C10H20
C10H22
C10H22
C10H22
C10H22
C10H22
C10H22
C10H22
C10H22
a
Molar
Mass
b
Boiling
Temp.
14.696
psia
128.2551
128.2551
128.2551
128.2551
128.2551
128.1705
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
140.2658
140.2658
140.2658
140.2658
142.2817
142.2817
142.2817
142.2817
142.2817
142.2817
142.2817
142.2817
c
Triple
Point
Temp.
b
Vapor Pressure
60 °F
284.56
285.11
287.71
289.34
290.94
424.38
336.39
342.90
343.93
347.06
350.82
352.59
358.02
358.91
361.90
362.02
362.16
362.73
364.24
367.26
372.77
374.10
380.95
386.80
388.71
400.72
340.82
357.71
396.17
309.82
312.52
320.77
327.64
327.78
329.46
330.42
332.40
°F
-176.71
-112.56
-162.35
176.40
-72.11
-60.88
-103.85
-82.79
-90.49
-96.75
-119.07
-116.57
-126.05
-82.62
-24.54
-45.89
-76.56
-64.66
-88.38
2.61
-57.10
174.56
-10.88
19.87
-42.11
-102.43
50.63
-123.53
-145.16
-101.76
100 °F
psia
0.08233
0.07988
0.05103
0.06224
0.07028
0.00241
0.02298
0.02004
0.01917
0.01667
0.01511
0.01515
0.01137
0.01511
0.01076
0.01121
0.01020
0.01012
0.01245
0.00855
0.00663
0.00740
0.00592
0.00497
0.00406
0.00338
0.02405
0.01318
0.00604
0.3022
0.2949
0.2117
0.2419
0.2625
0.01237
0.09502
0.08438
0.08057
0.07151
0.06506
0.06535
0.05145
0.06409
0.04868
0.04986
0.04676
0.04662
0.05429
0.04055
0.03237
0.03491
0.02878
0.02417
0.02054
0.01711
0.09764
0.05779
0.02773
0.04194
0.04726
0.03807
0.02449
0.01959
0.02752
0.01574
0.01506
0.1664
0.1796
0.1482
0.1038
0.08796
0.1125
0.07472
0.07086
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Page 8
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
h
Acentric
Factor
Critical Constants
Temp.
°F
598.73
598.55
574.97
589.43
607.19
887.33
706.87
710.84
714.83
713.93
717.16
722.93
718.25
720.05
729.20
723.65
727.25
724.55
729.77
730.13
737.33
748.13
757.13
756.55
762.89
784.13
713.93
715.91
816.53
625.73
614.57
632.93
640.13
640.31
627.35
651.11
613.13
623.21
Pressure
psia
350.9
351.2
343.2
333.9
351.1
585.8
434.9
441.8
426.5
416.8
406.0
415.6
400.3
366.0
418.7
384.2
411.2
405.8
379.7
412.5
417.8
421.9
424.8
418.2
429.6
450.5
409.7
370.7
467.9
343.2
309.4
318.6
312.7
320.6
315.5
320.2
299.0
304.5
Density
3
lbm/ft
14.981
14.862
15.082
14.621
14.842
19.627
17.505
16.996
17.105
17.103
16.996
17.353
17.043
16.997
16.837
16.922
17.325
16.976
17.206
17.224
17.139
17.469
17.455
17.146
17.358
17.430
16.312
16.024
16.925
16.201
14.661
14.914
14.899
14.799
14.751
15.245
14.778
14.547
0.3998
0.4045
0.5319
0.4550
0.4027
0.3024
0.3513
0.3794
0.3549
0.3656
0.3635
0.3615
0.3945
0.3552
0.3927
0.3788
0.3940
0.4026
0.3627
0.4132
0.4215
0.3905
0.3970
0.4257
0.4226
0.4284
0.3258
0.3698
0.3063
0.4361
0.3814
0.3928
0.4488
0.5074
0.4096
0.5790
0.5470
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
n-undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
n-dodecane
n-tridecane
n-tetradecane
n-pentadecane
n-hexadecane
Formula
C10H22
C11H16
C11H16
C11H16
C11H24
C12H18
C12H18
C12H18
C12H18
C12H26
C13H28
C14H30
C15H32
C16H34
a
Molar
Mass
b
Boiling
Temp.
14.696
psia
142.2817
148.2447
148.2447
148.2447
156.3083
162.2713
162.2713
162.2713
162.2713
170.3348
184.3614
198.3880
212.4146
226.4412
b
Vapor Pressure
60 °F
333.70
384.50
392.79
397.20
384.41
405.17
420.39
423.35
438.32
421.32
455.82
488.38
519.14
548.55
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
c
Triple
Point
Temp.
°F
-120.39
-58.50
-108.78
-14.10
-0.85
-87.50
-82.21
14.81
22.36
42.57
49.91
64.72
Page 9
psia
0.02008
0.00633
0.00745
0.00335
0.00395
0.00252
0.00138
0.00150
0.00096
0.00114
0.00035
0.00011
0.00004
0.00001
100 °F
0.08695
0.03073
0.03316
0.01755
0.02114
0.01355
0.00816
0.00863
0.00582
0.00712
0.00253
0.00089
0.00033
0.00010
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
h
Acentric
Factor
Critical Constants
Temp.
°F
645.89
748.13
784.13
755.33
690.17
767.93
762.53
773.33
791.33
724.91
756.93
786.80
812.72
840.37
Pressure
psia
314.3
387.4
382.7
373.9
288.7
383.5
336.8
338.1
344.1
263.5
242.5
227.1
209.4
208.0
Density
3
lbm/ft
14.783
16.822
17.439
16.616
14.782
16.809
16.231
16.838
16.256
14.143
14.242
14.241
14.152
14.084
0.4536
0.4136
0.3190
0.4428
0.5390
0.4487
0.5058
0.4772
0.4967
0.5742
0.6081
0.6458
0.6837
0.7323
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
2-methylpropene
1-butene
b,d
Density of Liquid
Relative
density (60
API
°F/60 °F)
gravity
Absolute
60 °F, 14.696 psia
lbm/gal
0.3
340
2.5
0.35628
265.66
2.9704
0.50719
147.49
4.2285
0.56283
119.91
4.6925
0.58420
110.71
4.8706
0.62514
94.848
5.2120
0.63071
92.850
5.2584
0.66406
81.582
5.5364
0.68823
74.101
5.7379
0.70655
68.768
5.8907
0.72224
64.418
6.0215
0.73458
61.127
6.1244
0.56820
117.53
4.7372
0.52260
139.260
4.3571
0.81716
41.660
6.8129
0.79886
45.628
6.6602
0.80687
43.868
6.7271
1.1423
-7.630
9.5238
0.12479
1002.4
1.0404
1.00000
10.000
8.3372
0.070918
1863.8
0.59126
0.79399
46.714
6.6197
0.85911
33.205
7.1625
1.0181
7.4844
8.4879
1.3365
-25.626
11.143
0.61730
97.724
5.1466
1.3952
-30.081
11.632
0.79595
46.275
6.6360
0.79400
46.712
6.6197
0.42323
202.83
3.5286
0.59528
106.20
4.9629
0.62733
94.059
5.2302
0.62670
94.286
5.2249
0.65941
83.086
5.4976
0.60064
104.08
5.0077
0.60044
104.16
5.0060
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
60 °F, sat.
1/°F
-0.00733
-0.00167
-0.00121
-0.00108
-0.00089
-0.00086
-0.00076
-0.00068
-0.00063
-0.00061
-0.00059
-0.00180
-0.00801
-0.00171
-0.00009
-0.00372
-0.00132
-0.00109
-0.00065
-0.00060
-0.00145
-0.00113
-0.00114
f
Density of Ideal Gas
Relative
density
Volume
Density
60 °F, 14.696 psia
3
ft /lbm
lbm/1000 ft3
0.5539
23.6549
42.27
1.0382
12.6204
79.24
1.5225
8.6059
116.20
2.0068
6.5290
153.16
2.0068
6.5290
153.16
2.4911
5.2597
190.12
2.4911
5.2597
190.12
2.9754
4.4036
227.09
3.4597
3.7872
264.05
3.9440
3.3221
301.01
4.4283
2.9588
337.97
4.9126
2.6671
374.93
0.9686
13.5273
73.92
1.4529
9.0182
110.89
1.5195
8.6227
115.97
1.1767
11.1348
89.81
0.9672
13.5465
73.82
1.1048
11.8593
84.322
0.1382
94.8090
10.55
0.62202
21.0645
47.473
0.0696
188.247
5.31
0.9671
13.5481
73.81
1.2589
10.4079
96.08
2.0742
6.3168
158.31
2.4482
5.3519
186.85
0.5880
22.2825
44.88
2.2120
5.9235
168.82
1.1063
11.8433
84.44
1.5906
8.2374
121.40
0.8990
14.5746
68.61
1.3833
9.4719
105.57
1.3833
9.4719
105.57
1.8676
7.0157
142.54
1.8676
7.0157
142.54
1.9372
6.7636
147.85
1.9372
6.7636
147.85
Page 10
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Liquid
ft3 ideal
gas/gal liq.
Ratio,
ideal
gas/liquid
60 °F, 14.696 psia
3
gal/lbmol
ft /gal
6.417
59.138
10.123
37.488
10.428
36.391
12.386
30.637
11.933
31.801
13.843
27.414
13.721
27.658
15.565
24.380
17.463
21.730
19.391
19.570
21.300
17.816
23.232
16.334
5.9219
64.081
9.6578
39.293
6.4598
58.746
5.1171
74.16
4.1643
91.128
3.3599
112.95
3.8471
98.641
2.1608
175.62
3.4095
111.30
4.2313
89.684
5.0905
74.547
7.0778
53.616
6.3634
59.636
3.3091
114.68
5.5077
68.901
4.8285
78.592
6.9593
54.529
7.3790
51.427
8.0726
47.009
7.6601
49.540
10.352
36.656
9.8388
38.570
11.204
33.870
11.208
33.858
442.38
280.43
272.22
229.18
237.89
205.07
206.89
182.38
162.56
146.39
133.28
122.19
479.36
293.93
439.45
554.76
681.69
844.89
737.88
1313.7
832.60
670.88
557.65
401.08
446.11
857.85
515.41
587.91
407.90
384.70
351.65
370.59
274.21
288.52
253.37
253.28
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
Compound
(E)-2-butene
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
3-methylhexane
3-ethylpentane
styrene
ethylbenzene
b,d
Density of Liquid
Relative
density (60
API
°F/60 °F)
gravity
Absolute
60 °F, 14.696 psia
lbm/gal
0.61030
100.35
5.0882
0.62716
94.120
5.2287
0.68510
75.039
5.7118
0.63427
91.591
5.2880
0.64631
87.435
5.3884
0.65579
84.270
5.4675
0.65313
85.149
5.4453
0.65940
83.089
5.4975
0.66430
81.506
5.5384
0.75047
57.049
6.2568
0.59530
106.20
4.9631
0.88444
28.488
7.3738
0.75368
56.245
6.2836
0.78362
49.072
6.5332
0.65403
84.851
5.4528
0.66599
80.966
5.5525
0.65786
83.591
5.4847
0.66914
79.965
5.5787
0.87188
30.793
7.2690
0.75922
54.875
6.3297
0.75350
56.290
6.2821
0.74952
57.287
6.2489
0.75608
55.650
6.3036
0.77729
50.543
6.4804
0.77403
51.309
6.4532
0.77102
52.023
6.4282
0.81587
41.934
6.8021
0.67835
77.094
5.6556
0.67726
77.430
5.6465
0.69454
72.232
5.7905
0.69831
71.132
5.8220
0.69941
70.813
5.8312
0.68328
75.589
5.6966
0.69147
73.136
5.7649
0.70310
69.752
5.8619
0.91130
23.773
7.5977
0.87163
30.840
7.2669
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
60 °F, sat.
1/°F
-0.00107
-0.00104
-0.00072
-0.00101
-0.00066
-0.00069
-0.00066
-0.00077
-0.00073
-0.00077
-0.00075
-0.00059
-0.00064
-0.00064
-0.00070
-0.00065
-0.00064
-0.00062
-0.00062
-0.00054
-0.00070
-0.00072
-0.00068
-0.00058
-0.00066
-0.00070
-0.00069
-0.00069
-0.00056
f
Density of Ideal Gas
Relative
density
Volume
Density
60 °F, 14.696 psia
3
ft /lbm
lbm/1000 ft3
1.9372
6.7636
147.85
1.9372
6.7636
147.85
2.3519
5.5710
179.50
2.4215
5.4109
184.81
2.4215
5.4109
184.81
2.4215
5.4109
184.81
2.4215
5.4109
184.81
2.4215
5.4109
184.81
2.4215
5.4109
184.81
2.4215
5.4109
184.81
2.4911
5.2597
190.12
2.6970
4.8582
205.84
2.9058
4.5091
221.77
2.9058
4.5091
221.77
2.9754
4.4036
227.09
2.9754
4.4036
227.09
2.9754
4.4036
227.09
2.9754
4.4036
227.09
3.1813
4.1186
242.80
3.3901
3.8649
258.74
3.3901
3.8649
258.74
3.3901
3.8649
258.74
3.3901
3.8649
258.74
3.3901
3.8649
258.74
3.3901
3.8649
258.74
3.3901
3.8649
258.74
3.3901
3.8649
258.74
3.4597
3.7872
264.05
3.4597
3.7872
264.05
3.4597
3.7872
264.05
3.4597
3.7872
264.05
3.4597
3.7872
264.05
3.4597
3.7872
264.05
3.4597
3.7872
264.05
3.4597
3.7872
264.05
3.5960
3.6436
274.45
3.6656
3.5745
279.76
Page 11
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Liquid
ft3 ideal
gas/gal liq.
Ratio,
ideal
gas/liquid
60 °F, 14.696 psia
3
gal/lbmol
ft /gal
11.027
34.415
10.730
35.365
11.926
31.821
13.263
28.613
13.015
29.156
12.827
29.584
12.880
29.464
12.757
29.747
12.663
29.968
11.209
33.855
14.537
26.105
10.593
35.823
13.394
28.333
12.882
29.459
15.804
24.012
15.520
24.451
15.712
24.153
15.447
24.567
12.676
29.938
15.512
24.464
15.630
24.280
15.713
24.152
15.576
24.363
15.151
25.047
15.215
24.941
15.274
24.844
14.435
26.290
17.717
21.419
17.746
21.384
17.305
21.930
17.211
22.049
17.184
22.084
17.590
21.574
17.381
21.833
17.094
22.200
13.708
27.683
14.609
25.975
257.44
264.55
238.04
214.04
218.10
221.30
220.41
222.52
224.17
253.25
195.28
267.98
211.95
220.37
179.62
182.91
180.67
183.77
223.95
183.00
181.63
180.67
182.25
187.36
186.57
185.85
196.66
160.22
159.97
164.05
164.94
165.20
161.39
163.32
166.07
207.09
194.31
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
Compound
p-xylene
m-xylene
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
2,3,4-trimethylpentane
2,3-dimethylhexane
2-methylheptane
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
b,d
Density of Liquid
Relative
density (60
API
°F/60 °F)
gravity
Absolute
60 °F, 14.696 psia
lbm/gal
0.86577
31.938
7.2181
0.86886
31.357
7.2439
0.88484
28.416
7.3771
0.75281
56.462
6.2764
0.75180
56.715
6.2679
0.75828
55.107
6.3219
0.77658
50.709
6.4745
0.76794
52.759
6.4024
0.77460
51.175
6.4580
0.76721
52.935
6.3964
0.78528
48.691
6.5470
0.78792
48.087
6.5690
0.76654
53.096
6.3908
0.77682
50.653
6.4765
0.77371
51.385
6.4506
0.78533
48.679
6.5474
0.78275
49.273
6.5260
0.78725
48.240
6.5634
0.77108
52.009
6.4286
0.78076
49.734
6.5093
0.78960
47.705
6.5830
0.80092
45.172
6.6774
0.78063
49.764
6.5082
0.79264
47.017
6.6084
0.84074
36.804
7.0094
0.69635
71.702
5.8056
0.69973
70.721
5.8338
0.69833
71.126
5.8221
0.70366
69.591
5.8666
0.71993
65.047
6.0022
0.71395
66.693
5.9524
0.72300
64.212
6.0278
0.71686
65.889
5.9766
0.70196
70.078
5.8524
0.70885
68.119
5.9099
0.72320
64.158
6.0294
0.71746
65.724
5.9816
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
60 °F, sat.
1/°F
-0.00056
-0.00055
-0.00053
-0.00064
-0.00063
-0.00063
-0.00059
-0.00061
-0.00062
-0.00061
-0.00057
-0.00059
-0.00061
-0.00062
-0.00060
-0.00059
-0.00058
-0.00058
-0.00059
-0.00056
-0.00056
-0.00056
-0.00058
-0.00057
-0.00053
-0.00065
-0.00066
-0.00066
-0.00063
-0.00060
-0.00062
-0.00060
-0.00061
-0.00065
-0.00064
-0.00061
-0.00062
f
Density of Ideal Gas
Relative
density
Volume
Density
60 °F, 14.696 psia
3
ft /lbm
lbm/1000 ft3
3.6656
3.5745
279.76
3.6656
3.5745
279.76
3.6656
3.5745
279.76
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.8744
3.3818
295.70
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
3.9440
3.3221
301.01
Page 12
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Liquid
ft3 ideal
gas/gal liq.
Ratio,
ideal
gas/liquid
60 °F, 14.696 psia
3
gal/lbmol
ft /gal
14.708
25.801
14.656
25.893
14.391
26.369
17.879
21.226
17.903
21.197
17.750
21.380
17.331
21.896
17.527
21.652
17.376
21.840
17.543
21.631
17.139
22.141
17.082
22.215
17.559
21.612
17.326
21.902
17.396
21.815
17.138
22.142
17.195
22.070
17.097
22.196
17.455
21.740
17.239
22.013
17.046
22.263
16.805
22.582
17.242
22.010
16.980
22.348
16.009
23.705
19.676
19.287
19.581
19.381
19.620
19.342
19.471
19.490
19.031
19.940
19.190
19.775
18.950
20.025
19.113
19.855
19.518
19.442
19.328
19.633
18.945
20.031
19.097
19.872
193.00
193.69
197.25
158.78
158.56
159.93
163.79
161.97
163.37
161.81
165.63
166.18
161.67
163.84
163.19
165.64
165.09
166.04
162.63
164.67
166.54
168.92
164.64
167.18
177.32
144.28
144.98
144.69
145.79
149.16
147.92
149.80
148.53
145.44
146.87
149.84
148.65
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
Compound
3-methylheptane
isopropylbenzene
propylbenzene
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
2,4,4-trimethylhexane
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
b,d
Density of Liquid
Relative
density (60
API
°F/60 °F)
gravity
Absolute
60 °F, 14.696 psia
lbm/gal
0.70987
67.832
5.9183
0.86670
31.763
7.2259
0.86653
31.795
7.2245
0.86899
31.333
7.2449
0.86596
31.902
7.2197
0.86954
31.230
7.2495
0.88537
28.320
7.3815
0.88031
29.239
7.3393
0.89871
25.948
7.4927
0.77572
50.911
6.4673
0.78302
49.211
6.5282
0.77439
51.224
6.4562
0.78345
49.111
6.5318
0.77843
50.276
6.4899
0.79129
47.322
6.5972
0.79134
47.311
6.5976
0.79005
47.603
6.5868
0.79556
46.362
6.6328
0.80285
44.747
6.6935
0.78481
48.798
6.5431
0.80685
43.873
6.7268
0.80736
43.763
6.7311
0.80630
43.993
6.7223
0.78875
47.898
6.5760
0.79813
45.789
6.6541
0.83784
37.387
6.9852
0.72370
64.023
6.0336
0.71140
67.404
5.9311
0.71972
65.104
6.0005
0.72791
62.892
6.0687
0.72608
63.382
6.0535
0.71896
65.312
5.9941
0.71469
66.488
5.9585
0.73597
60.763
6.1360
0.71424
66.613
5.9548
0.72071
64.834
6.0087
0.72414
63.904
6.0373
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
60 °F, sat.
1/°F
-0.00063
-0.00055
-0.00053
-0.00055
-0.00055
-0.00054
-0.00052
-0.00050
-0.00049
-0.00054
-0.00054
-0.00057
-0.00052
-0.00056
-0.00056
-0.00057
-0.00053
-0.00056
-0.00051
-0.00057
-0.00055
-0.00055
-0.00053
-0.00056
-0.00055
-0.00050
-0.00060
-0.00063
-0.00059
-0.00059
-0.00061
-0.00058
-0.00060
-0.00060
-0.00059
-0.00059
Page 13
f
Density of Ideal Gas
Relative
density
Volume
Density
60 °F, 14.696 psia
3
ft /lbm
lbm/1000 ft3
3.9440
3.3221
301.01
4.1499
3.1573
316.72
4.1499
3.1573
316.72
4.1499
3.1573
316.72
4.1499
3.1573
316.72
4.1499
3.1573
316.72
4.1499
3.1573
316.72
4.1499
3.1573
316.72
4.1499
3.1573
316.72
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.3587
3.0061
332.66
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
b,d,g
Volume
Liquid
Ratio,
ideal
gas/liquid
60 °F, 14.696 psia
3
gal/lbmol
ft /gal
19.301
19.661
16.634
22.814
16.637
22.810
16.590
22.875
16.648
22.795
16.579
22.889
16.283
23.306
16.376
23.173
16.041
23.657
19.520
19.441
19.338
19.624
19.553
19.408
19.327
19.635
19.452
19.509
19.135
19.832
19.134
19.833
19.165
19.800
19.033
19.939
18.860
20.121
19.293
19.669
18.766
20.221
18.755
20.234
18.779
20.208
19.197
19.768
18.972
20.003
18.072
20.998
21.257
17.852
21.624
17.549
21.374
17.754
21.134
17.956
21.187
17.911
21.397
17.735
21.525
17.630
20.902
18.155
21.538
17.619
21.345
17.779
21.244
17.863
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
ft3 ideal
gas/gal liq.
147.08
170.66
170.63
171.11
170.52
171.22
174.34
173.34
176.97
145.43
146.80
145.18
146.88
145.94
148.35
148.36
148.12
149.15
150.52
147.13
151.27
151.36
151.16
147.87
149.63
157.08
133.54
131.28
132.81
134.32
133.98
132.67
131.88
135.81
131.80
132.99
133.63
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
Compound
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
b,d
Density of Liquid
Relative
density (60
API
°F/60 °F)
gravity
Absolute
60 °F, 14.696 psia
lbm/gal
0.73018
62.288
6.0876
0.73889
60.003
6.1602
0.74239
59.101
6.1894
0.76065
54.525
6.3417
0.73564
60.850
6.1332
0.72941
62.492
6.0813
0.72614
63.366
6.0539
0.71733
65.759
5.9805
0.72482
63.721
6.0430
1.0301
5.8653
8.5880
0.87096
30.964
7.2614
0.85739
33.536
7.1482
0.86656
31.789
7.2247
0.86529
32.029
7.2141
0.86123
32.800
7.1802
0.88026
29.248
7.3389
0.86826
31.470
7.2389
0.86565
31.961
7.2171
0.86459
32.161
7.2083
0.86279
32.503
7.1933
0.88436
28.503
7.3731
0.86628
31.842
7.2224
0.87830
29.607
7.3225
0.88175
28.976
7.3513
0.87850
29.570
7.3243
0.89483
26.631
7.4604
0.89635
26.362
7.4731
0.89076
27.353
7.4264
0.89453
26.684
7.4579
0.90916
24.138
7.5799
0.81678
41.741
6.8097
0.80333
44.642
6.6975
0.86315
32.434
7.1963
0.79958
45.468
6.6662
0.72883
62.647
6.0764
0.73971
59.791
6.1671
0.74287
58.977
6.1935
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
60 °F, sat.
1/°F
-0.00060
-0.00062
-0.00058
-0.00054
-0.00056
-0.00059
-0.00059
-0.00060
-0.00059
-0.00053
-0.00052
-0.00047
-0.00051
-0.00052
-0.00050
-0.00052
-0.00051
-0.00052
-0.00052
-0.00050
-0.00056
-0.00049
-0.00057
-0.00051
-0.00050
-0.00050
-0.00056
-0.00047
-0.00049
-0.00053
-0.00054
-0.00051
-0.00054
-0.00056
-0.00061
-0.00056
f
Density of Ideal Gas
Relative
density
Volume
Density
60 °F, 14.696 psia
3
ft /lbm
lbm/1000 ft3
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4283
2.9588
337.97
4.4254
2.9608
337.75
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.6342
2.8274
353.69
4.8430
2.7055
369.62
4.8430
2.7055
369.62
4.8430
2.7055
369.62
4.8430
2.7055
369.62
4.9126
2.6671
374.94
4.9126
2.6671
374.94
4.9126
2.6671
374.94
Page 14
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Liquid
ft3 ideal
gas/gal liq.
Ratio,
ideal
gas/liquid
60 °F, 14.696 psia
3
gal/lbmol
ft /gal
21.068
18.012
20.820
18.227
20.722
18.313
20.224
18.764
20.912
18.147
21.090
17.993
21.185
17.912
21.445
17.695
21.224
17.880
14.924
25.427
18.484
20.531
18.776
20.211
18.578
20.427
18.605
20.397
18.693
20.301
18.288
20.750
18.541
20.467
18.597
20.405
18.620
20.380
18.659
20.338
18.204
20.846
18.584
20.420
18.329
20.703
18.258
20.785
18.325
20.708
17.991
21.093
17.960
21.129
18.073
20.997
17.997
21.086
17.707
21.431
20.598
18.423
20.943
18.120
19.491
19.469
21.041
18.035
23.415
16.207
23.071
16.448
22.973
16.519
134.74
136.35
136.99
140.36
135.75
134.60
133.99
132.37
133.75
190.21
153.58
151.19
152.80
152.58
151.86
155.22
153.10
152.64
152.46
152.14
155.94
152.75
154.87
155.48
154.91
157.79
158.06
157.07
157.73
160.31
137.82
135.55
145.64
134.91
121.23
123.04
123.57
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
n-undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
n-dodecane
n-tridecane
n-tetradecane
n-pentadecane
n-hexadecane
b,d
Density of Liquid
Relative
density (60
API
°F/60 °F)
gravity
Absolute
60 °F, 14.696 psia
lbm/gal
0.74217
59.157
6.1876
0.73615
60.716
6.1375
0.76210
54.171
6.3538
0.73616
60.714
6.1375
0.73054
62.192
6.0907
0.73718
60.448
6.1460
0.86394
32.285
7.2028
0.89390
26.795
7.4526
0.86352
32.364
7.1994
0.74442
58.581
6.2064
0.86953
31.232
7.2494
0.86651
31.799
7.2243
0.88266
28.811
7.3590
0.86329
32.408
7.1974
0.75348
56.295
6.2819
0.76030
54.611
6.3388
0.76706
52.971
6.3952
0.77218
51.747
6.4378
0.77735
50.529
6.4809
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
60 °F, sat.
1/°F
-0.00057
-0.00057
-0.00057
-0.00064
-0.00057
-0.00057
-0.00051
-0.00050
-0.00050
-0.00057
-0.00052
-0.00053
-0.00052
-0.00049
-0.00055
-0.00052
-0.00053
-0.00050
f
Density of Ideal Gas
Relative
density
Volume
Density
60 °F, 14.696 psia
3
ft /lbm
lbm/1000 ft3
4.9126
2.6671
374.94
4.9126
2.6671
374.94
4.9126
2.6671
374.94
4.9126
2.6671
374.94
4.9126
2.6671
374.94
4.9126
2.6671
374.94
5.1185
2.5598
390.65
5.1185
2.5598
390.65
5.1185
2.5598
390.65
5.3969
2.4278
411.90
5.6028
2.3386
427.61
5.6028
2.3386
427.61
5.6028
2.3386
427.61
5.6028
2.3386
427.61
5.8812
2.2279
448.86
6.3655
2.0584
485.82
6.8498
1.9128
522.79
7.3341
1.7865
559.75
7.8184
1.6759
596.71
Page 15
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Liquid
ft3 ideal
gas/gal liq.
Ratio,
ideal
gas/liquid
60 °F, 14.696 psia
3
gal/lbmol
ft /gal
22.995
16.503
23.183
16.369
22.393
16.946
23.182
16.369
23.361
16.245
23.150
16.392
20.581
18.438
19.892
19.077
20.591
18.429
25.185
15.068
22.384
16.953
22.462
16.895
22.051
17.209
22.546
16.832
27.115
13.995
29.085
13.048
31.022
12.233
32.995
11.501
34.940
10.861
123.45
122.45
126.77
122.45
121.52
122.62
137.93
142.71
137.86
112.72
126.82
126.38
128.74
125.91
104.69
97.602
91.508
86.035
81.246
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=14.696 psia
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
2-methylpropene
1-butene
(E)-2-butene
0.5
60 °F
1/psia
0.0116
0.0238
0.0347
0.0441
0.0470
0.0576
0.0606
0.0776
0.0951
0.1128
0.1307
0.1556
0.0207
0.0327
0.0195
0.0239
0.00442
0.0072
0.04438
0.0913
0.1329
0.1690
0.1801
0.2206
0.2323
0.2973
0.3646
0.4326
0.5009
0.5967
0.0795
0.1254
0.0748
0.0917
0.01696
0.02752
0.06510
0.2496
0.0056
0.0212
0.0290
0.0333
0.0284
0.0361
0.0764
0.0755
0.0217
0.0321
0.0354
0.0455
0.0448
0.0455
0.0455
0.0477
0.0216
0.0811
0.1110
0.1277
0.1089
0.1383
0.2930
0.2896
0.0833
0.1231
0.1359
0.1745
0.1717
0.1744
0.1744
0.1830
Compressibility
Factor
60 °F
-
Fuel as Liquid
Btu/lbm
Btu/gal
0.5788
0.8499
0.9188
0.9386
0.9677
0.9740
0.9884
0.9951
0.9980
0.9992
0.9997
22185.
21491.
21081.
21137.
20891.
20923.
20783.
20680.
20601.
20543.
20494.
65897.
90875.
98924.
102950.
108880.
110020.
115060.
118660.
121350.
123700.
125510.
0.8345
0.5764
0.8460
20875.
90954.
6892.4
45905.
0.9989
0.6585
0.8604
0.8955
0.9031
0.9426
0.9803
0.9963
0.9049
0.9089
0.9384
0.9659
0.9267
0.9288
0.9396
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Ideal gas
60 °F, ideal reaction
3
Btu/lbm
Btu/ft
Btu/gal
23892.
1010.0
59729.
22334.
1769.7
66340.
21654.
2516.1
91563.
21232.
3251.9
99630.
21300.
3262.3
103740.
21044.
4000.9
109680.
21085.
4008.7
110870.
20943.
4755.9
115950.
20839.
5502.6
119570.
20760.
6249.0
122290.
20701.
6996.3
124650.
20651.
7742.9
126480.
21640.
1599.7
102515.
21040.
2333.0
91672.
7094.0
637.10
47248.
1059.8
61022.
4342.
50.310
324.2
320.5
8835.4
36080.
28745.
b,d,i
Net Heating Value
Fuel as
Fuel as
Liquid
Ideal gas
Btu/lbm
3
19514.
Btu/ft
909.4
1619.
2315.
3000.
3011.
3699.
3707.
4404.
5100.
5796.
6493.
7190.
1499.
2182.
6332.
586.79
20281.
19760.
19440.
19495.
19303.
19335.
19233.
19155.
19096.
19054.
19018.
273.9
320.5
3916.
3428.
9139.
-2153.
9749.
12504.
21484.
20852.
33240.
38203.
47032.
-25039.
64694.
82771.
75808.
103489.
3923.
3436.
9680.
-1992.
10265.
12904.
21488.
20860.
621.0
642.0
434.4
-336.3
866.7
1566.6
1474.3
2202.3
33296.
38288.
49821.
-23169.
68117.
85423.
75820.
103527.
3916.
3428.
7457.
-2153.
8557.
11260.
20751.
19899.
621.0
642.0
359.0
-336.3
766.1
1416.
1424.
2102.
20195.
20616.
20541.
20668.
20579.
105519.
113338.
102861.
103461.
104712.
20205.
20626.
20704.
20832.
20752.
2879.9
2940.0
3061.1
3079.9
3068.1
105567.
113395.
103680.
104282.
105588.
19137.
19557.
19179.
19307.
19218.
2729.
2789.
2860.
2879.
2867.
Page 16
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=14.696 psia
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
Compound
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
3-methylhexane
3-ethylpentane
styrene
ethylbenzene
p-xylene
m-xylene
0.5
60 °F
1/psia
0.0478
0.0585
0.0559
0.0593
0.0581
0.0601
0.0599
0.0561
0.0573
0.0519
0.0656
0.0630
0.0696
0.0610
0.0672
0.0729
0.0711
0.0872
0.0759
0.0667
0.0850
0.0582
0.0645
0.0862
0.0614
0.0968
0.0863
0.0821
0.1159
0.0769
0.0722
0.1022
0.1111
0.1034
0.0774
0.0987
0.1072
0.1027
0.1832
0.2244
0.2142
0.2275
0.2226
0.2304
0.2297
0.2152
0.2197
0.1990
0.2513
0.2417
0.2668
0.2339
0.2575
0.2795
0.2724
0.3343
0.2908
0.2556
0.3260
0.2231
0.2473
0.3305
0.2355
0.3711
0.3307
0.3147
0.4444
0.2946
0.2770
0.3917
0.4259
0.3963
0.2969
0.3784
0.4111
0.3935
Compressibility
Factor
60 °F
0.9455
0.9746
0.9610
0.9694
0.9721
0.9755
0.9762
0.9803
0.9861
0.9482
0.9949
0.9931
0.9941
0.9842
0.9862
0.9853
0.9877
0.9975
0.9946
0.9963
0.9943
0.9973
0.9976
0.9958
0.9982
0.9976
0.9902
0.9917
0.9827
0.9939
0.9956
0.9917
0.9908
0.9925
0.9996
0.9990
0.9989
0.9990
GPA 2145
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Liquid
Fuel as Ideal gas
60 °F, ideal reaction
3
Btu/lbm
Btu/ft
Btu/gal
20780.
3072.3
108652.
20112.
3610.2
114879.
Btu/lbm
20603.
20101.
Btu/gal
107728.
114813.
20694.
111509.
20705.
3826.6
20186.
20823.
17989.
20278.
20037.
20845.
20883.
20753.
20906.
18250.
20054.
20071.
20062.
20057.
20083.
20143.
20265.
20120.
20586.
20610.
20601.
20604.
20619.
20630.
20643.
20649.
18124.
18493.
18263.
18258.
126303.
103346.
132646.
127421.
130903.
113663.
115952.
113826.
116627.
132656.
126937.
126089.
125367.
126433.
130146.
129990.
130266.
136856.
116427.
116372.
119291.
119954.
120235.
117520.
119004.
121045.
137700.
134385.
131823.
132256.
20365.
20959.
18178.
20292.
20208.
20857.
20896.
20906.
20919.
18430.
20069.
20086.
20077.
20072.
20098.
20159.
20281.
20137.
20600.
20624.
20615.
20618.
20634.
20645.
20658.
20665.
18143.
18666.
18437.
18433.
3763.6
3984.8
3741.8
4500.3
4481.7
4736.3
4745.1
4747.4
4750.4
4474.7
5192.5
5197.0
5194.7
5193.5
5200.2
5215.8
5247.4
5210.1
5439.5
5445.7
5443.4
5444.2
5448.5
5451.3
5454.7
5456.5
4979.4
5222.1
5157.9
5156.8
Page 17
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Fuel as
Liquid
Ideal gas
3
Btu/lbm
19242.
18980.
Btu/ft
2871.
3409.
111569.
19333.
3575.
127418.
104022.
134044.
127508.
132023.
113729.
116023.
114662.
116700.
133965.
127030.
126183.
125460.
126528.
130247.
130090.
130368.
136970.
116507.
116453.
119372.
120038.
120322.
117607.
119092.
121135.
137846.
135645.
133078.
133525.
18825.
19235.
17256.
18917.
18676.
19294.
19332.
19202.
19355.
17421.
18693.
18710.
18701.
18696.
18722.
18782.
18904.
18759.
19062.
19085.
19077.
19079.
19095.
19106.
19119.
19125.
17391.
17594.
17364.
17358.
3512.
3683.
3591.
4198.
4180.
4384.
4393.
4395.
4398.
4273.
4840.
4845.
4843.
4841.
4848.
4864.
4895.
4858.
5037.
5043.
5041.
5042.
5046.
5049.
5052.
5054.
4778.
4971.
4906.
4905.
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=14.696 psia
Compound
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
2,3,4-trimethylpentane
2,3-dimethylhexane
2-methylheptane
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
3-methylheptane
isopropylbenzene
propylbenzene
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
0.5
60 °F
1/psia
0.1146
0.0648
0.0556
0.0606
0.0604
0.0728
0.0574
0.0612
0.0747
0.0636
0.0549
0.0620
0.0696
0.0613
0.0685
0.0494
0.0995
0.0765
0.0374
0.0496
0.0587
0.0427
0.1156
0.0937
0.0700
0.0821
0.2336
0.0674
0.0475
0.0629
0.0534
0.0448
0.0838
0.0589
0.0501
0.0438
0.0854
0.0872
0.4395
0.2486
0.2130
0.2323
0.2317
0.2792
0.2199
0.2346
0.2865
0.2437
0.2106
0.2379
0.2667
0.2351
0.2626
0.1892
0.3813
0.2934
0.1435
0.1902
0.2251
0.1638
0.4432
0.3591
0.2685
0.3146
0.8955
0.2584
0.1821
0.2411
0.2045
0.1717
0.3213
0.2259
0.1921
0.1680
0.3274
0.3341
Compressibility
Factor
60 °F
0.9990
0.9980
0.9988
0.9986
0.9988
0.9985
0.9991
0.9990
0.9985
0.9990
0.9993
0.9991
0.9988
0.9991
0.9989
0.9995
0.9980
0.9989
0.9998
0.9996
0.9995
0.9997
0.9992
0.9947
0.9980
0.9976
0.9805
0.9983
0.9992
0.9987
0.9992
0.9995
0.9984
0.9991
0.9994
0.9996
0.9996
0.9997
GPA 2145
--``,```,`,`,`,``
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Liquid
Btu/lbm
18444.
20201.
20177.
20177.
20157.
20177.
20177.
19954.
19968.
19979.
20054.
20061.
20058.
20063.
20177.
19979.
19951.
20200.
20073.
19993.
20081.
20161.
20158.
20421.
20529.
20534.
20547.
20547.
20545.
20554.
20563.
20553.
20566.
20566.
20571.
20563.
18636.
18645.
Btu/gal
136062.
126790.
126470.
127560.
130507.
129182.
130301.
127632.
130728.
131244.
128163.
129923.
129386.
131360.
131672.
131132.
128258.
131486.
132144.
133504.
130690.
133230.
141298.
118553.
119758.
119550.
120540.
123328.
122290.
123896.
122896.
120286.
121542.
123999.
123046.
121700.
134660.
134703.
Fuel as Ideal gas
60 °F, ideal reaction
3
Btu/lbm
Btu/ft
Btu/gal
18622.
5209.7
137376.
20217.
5978.1
126888.
20193.
5971.2
126571.
20193.
5971.2
127662.
20173.
5965.2
130612.
20193.
5971.2
129287.
20193.
5971.2
130409.
19970.
5905.2
127737.
19984.
5909.3
130837.
19996.
5912.7
131353.
20071.
5935.0
128270.
20077.
5936.8
130031.
20075.
5936.0
129493.
20080.
5937.5
131470.
20193.
5971.2
131782.
19996.
5912.8
131243.
19968.
5904.6
128368.
20217.
5978.1
131598.
20091.
5940.9
132259.
20011.
5917.1
133620.
20099.
5943.1
130806.
20178.
5966.7
133346.
20177.
5966.4
141431.
20555.
6187.3
119334.
20545.
6184.2
119853.
20550.
6185.9
119647.
20563.
6189.7
120635.
20563.
6189.8
123426.
20561.
6189.1
122388.
20571.
6192.0
123995.
20580.
6194.7
122997.
20571.
6192.0
120388.
20583.
6195.8
121645.
20583.
6195.6
124101.
20588.
6197.2
123150.
20581.
6195.0
121803.
18656.
5908.7
134802.
18666.
5911.8
134848.
Page 18
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Fuel as
Liquid
Ideal gas
Btu/lbm
17545.
18840.
18816.
18816.
18796.
18816.
18816.
18593.
18606.
18618.
18693.
18700.
18697.
18702.
18815.
18618.
18590.
18838.
18712.
18632.
18720.
18800.
18797.
18916.
19024.
19030.
19043.
19043.
19040.
19050.
19058.
19049.
19062.
19061.
19066.
19059.
17683.
17692.
3
Btu/ft
4958.
5576.
5569.
5569.
5563.
5569.
5569.
5503.
5507.
5510.
5533.
5534.
5534.
5535.
5569.
5510.
5502.
5576.
5538.
5515.
5541.
5564.
5564.
5734.
5731.
5733.
5737.
5737.
5736.
5739.
5742.
5739.
5743.
5743.
5744.
5742.
5607.
5610.
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=14.696 psia
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
Compound
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
2,4,4-trimethylhexane
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
0.5
60 °F
1/psia
0.0884
0.0877
0.0897
0.0886
0.0894
0.0890
0.0577
0.0371
0.0469
0.0886
0.0427
0.0890
0.0892
0.0894
0.0900
0.0694
0.0892
0.0909
0.0915
0.0873
0.0900
0.1283
0.0897
0.0553
0.0867
0.0252
0.0822
0.0889
0.0905
0.0907
0.0471
0.0912
0.0912
0.0915
0.0915
0.0895
0.0900
0.0872
0.3388
0.3361
0.3439
0.3398
0.3426
0.3412
0.2213
0.1422
0.1797
0.3396
0.1636
0.3413
0.3420
0.3426
0.3450
0.2659
0.3421
0.3486
0.3508
0.3348
0.3450
0.4917
0.3439
0.2121
0.3322
0.0966
0.3152
0.3409
0.3471
0.3478
0.1807
0.3498
0.3497
0.3508
0.3507
0.3432
0.3451
0.3343
Compressibility
Factor
60 °F
0.9998
0.9998
0.9998
0.9998
0.9998
0.9999
0.9995
0.9998
0.9998
0.9992
0.9998
0.9993
0.9993
0.9993
0.9994
0.9995
0.9994
0.9995
0.9995
0.9996
0.9997
0.9993
0.9997
0.9993
0.9986
0.9999
0.9990
0.9989
0.9990
0.9990
0.9997
0.9991
0.9991
0.9991
0.9990
0.9992
0.9991
0.9992
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Liquid
Btu/lbm
18608.
18604.
18556.
18616.
18560.
18572.
20068.
20106.
20084.
20085.
20085.
20084.
20085.
20084.
20084.
20067.
20204.
20084.
20084.
20104.
20224.
19856.
20281.
20496.
20452.
20487.
20496.
20483.
20632.
20469.
20487.
20623.
20631.
20640.
20623.
20492.
20637.
20502.
Btu/gal
134813.
134313.
134520.
137413.
136221.
139153.
129784.
131256.
129669.
131188.
130351.
132499.
132510.
132292.
133214.
134319.
132197.
135102.
135185.
135148.
132989.
132124.
141668.
123665.
121304.
122934.
124385.
123994.
123668.
121962.
125709.
122805.
123969.
124611.
125543.
126237.
127732.
130019.
Fuel as Ideal gas
60 °F, ideal reaction
3
Btu/lbm
Btu/ft
Btu/gal
18628.
5900.1
134962.
18625.
5898.9
134463.
18576.
5883.4
134665.
18637.
5902.7
137567.
18582.
5885.2
136376.
18593.
5888.9
139314.
20085.
6681.5
129895.
20124.
6694.4
131371.
20103.
6687.5
129789.
20103.
6687.5
131308.
20103.
6687.5
130466.
20103.
6687.5
132623.
20103.
6687.5
132631.
20103.
6687.5
132414.
20103.
6687.5
133338.
20085.
6681.5
134439.
20223.
6727.3
132320.
20103.
6687.5
135229.
20103.
6687.5
135315.
20124.
6694.4
135278.
20244.
6734.3
133121.
20012.
6657.1
133159.
20300.
6753.1
141800.
20513.
6932.8
123766.
20470.
6918.2
121408.
20505.
6930.1
123039.
20514.
6933.1
124492.
20501.
6928.8
124102.
20650.
6979.1
123778.
20487.
6924.0
122072.
20505.
6930.2
125819.
20641.
6976.3
122916.
20650.
6979.1
124080.
20659.
6982.1
124723.
20641.
6976.1
125654.
20511.
6932.1
126351.
20655.
6980.9
127844.
20520.
6935.3
130134.
Page 19
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Fuel as
Liquid
Ideal gas
Btu/lbm
17655.
17651.
17603.
17663.
17607.
17619.
18707.
18745.
18723.
18723.
18724.
18723.
18723.
18723.
18723.
18706.
18843.
18723.
18723.
18743.
18862.
18495.
18920.
19007.
18963.
18999.
19008.
18994.
19143.
18980.
18999.
19134.
19143.
19151.
19134.
19004.
19149.
19013.
3
Btu/ft
5598.
5597.
5582.
5601.
5583.
5587.
6229.
6242.
6235.
6235.
6235.
6235.
6235.
6235.
6235.
6229.
6275.
6235.
6235.
6242.
6281.
6204.
6300.
6430.
6415.
6427.
6430.
6426.
6476.
6421.
6427.
6473.
6476.
6479.
6473.
6429.
6478.
6432.
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
1/psia
0.0920
0.0921
0.0940
0.0949
0.0930
0.1752
0.1581
0.0926
0.1576
0.0952
0.0967
0.0961
0.0986
0.1019
0.1627
0.1007
0.0982
0.0989
0.1013
0.0990
0.0995
0.0990
0.0998
0.1016
0.4590
0.4159
0.0946
0.1013
0.0975
0.3526
0.3530
0.3604
0.3636
0.3565
0.6717
0.6060
0.3551
0.6043
0.3649
0.3708
0.3685
0.3780
0.3905
0.6237
0.3860
0.3765
0.3791
0.3885
0.3797
0.3813
0.3796
0.3827
0.3895
1.7596
1.5942
0.3628
0.3884
0.3739
Compressibility
Factor
60 °F
0.9993
0.9993
0.9995
0.9994
0.9994
0.9999
0.9994
0.9998
0.9995
0.9998
0.9999
0.9999
0.9999
0.9998
0.9997
0.9999
0.9999
0.9999
0.9999
0.9999
0.9999
0.9999
0.9999
0.9999
0.9991
0.9994
0.9998
0.9999
0.9999
0.1010
0.1000
0.1022
0.1028
0.1039
0.1028
0.1071
0.1065
0.3874
0.3832
0.3916
0.3940
0.3984
0.3941
0.4108
0.4083
0.9996
0.9995
0.9996
0.9997
0.9998
0.9997
0.9998
0.9998
P0=14.696 psia
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
Compound
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
0.5
60 °F
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Liquid
Btu/lbm
20648.
20639.
20649.
20642.
20651.
17270.
18764.
18769.
18780.
18901.
18901.
18901.
18925.
18922.
18790.
18921.
18925.
18925.
18921.
18719.
18715.
18734.
18733.
18601.
18680.
18700.
20067.
19994.
20168.
20120.
20561.
20593.
20576.
20591.
20439.
20610.
20600.
20433.
Page 20
Btu/gal
126637.
125514.
125009.
123450.
124793.
148315.
136253.
134165.
135679.
136356.
135716.
138715.
136995.
136559.
135442.
136104.
139534.
136681.
138551.
137609.
137071.
139764.
139989.
138140.
139311.
141742.
136651.
133910.
145131.
134125.
124936.
126999.
127439.
127410.
125443.
130953.
126434.
124450.
Fuel as Ideal gas
60 °F, ideal reaction
3
Btu/lbm
Btu/ft
Btu/gal
20667.
6984.9
126755.
20659.
6982.1
125631.
20670.
6986.0
125137.
20662.
6983.2
123569.
20670.
6986.0
124911.
17294.
5840.9
148518.
18785.
6643.9
136404.
18790.
6645.9
134316.
18801.
6649.7
135831.
18923.
6692.7
136510.
18923.
6692.7
135870.
18923.
6692.7
138873.
18947.
6701.3
137156.
18943.
6699.9
136714.
18812.
6653.5
135601.
18943.
6699.9
136262.
18947.
6701.3
139698.
18947.
6701.3
136843.
18943.
6699.9
138710.
18742.
6628.8
137778.
18738.
6627.4
137243.
18757.
6634.1
139934.
18756.
6633.7
140163.
18624.
6587.1
138310.
18703.
6614.9
139482.
18723.
6622.0
141916.
20088.
7424.9
136791.
20016.
7398.3
134055.
20190.
7462.6
145292.
20138.
7443.6
134247.
20581.
7716.6
125059.
20612.
7728.4
127120.
20596.
7722.4
127563.
20612.
7728.4
127542.
20461.
7671.4
125576.
20631.
7735.3
131085.
20623.
7732.4
126575.
20455.
7669.2
124584.
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Fuel as
Liquid
Ideal gas
Btu/lbm
19159.
19151.
19161.
19153.
19162.
16674.
17768.
17773.
17784.
17906.
17906.
17906.
17929.
17926.
17794.
17925.
17929.
17929.
17925.
17723.
17719.
17739.
17737.
17606.
17684.
17704.
18706.
18633.
18806.
18759.
19085.
19117.
19100.
19115.
18963.
19134.
19124.
18957.
3
Btu/ft
6482.
6479.
6483.
6480.
6483.
5640.
6292.
6294.
6298.
6341.
6341.
6341.
6349.
6348.
6301.
6348.
6349.
6349.
6348.
6277.
6275.
6282.
6282.
6235.
6263.
6270.
6922.
6895.
6960.
6941.
7163.
7175.
7169.
7175.
7118.
7182.
7179.
7116.
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=14.696 psia
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
n-undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
n-dodecane
n-tridecane
n-tetradecane
n-pentadecane
n-hexadecane
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
0.5
60 °F
1/psia
0.1047
0.1042
0.1050
0.1079
0.2249
0.1082
0.1171
0.1171
0.1190
0.1978
0.1417
0.1529
0.1655
0.1733
0.4012
0.3994
0.4025
0.4138
0.8621
0.4149
0.4489
0.4488
0.4562
0.7583
0.5434
0.5862
0.6344
0.6642
Compressibility
Factor
60 °F
0.9998
0.9999
0.9999
1.0000
0.9998
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
GPA 2145
b,d,i
Gross Heating Value
Fuel as Liquid
Btu/lbm
20602.
19062.
19007.
19072.
20453.
18913.
19108.
19108.
19164.
20420.
20520.
20493.
20470.
20277.
Btu/gal
126619.
137304.
141649.
137304.
126939.
137112.
138041.
140617.
137933.
128276.
130070.
131058.
131783.
131415.
Fuel as Ideal gas
60 °F, ideal reaction
3
Btu/lbm
Btu/ft
Btu/gal
20623.
7732.4
126751.
19086.
7455.8
137471.
19029.
7433.5
141812.
19096.
7459.9
137480.
20610.
8489.4
127917.
18938.
8098.2
137290.
19134.
8181.9
138230.
19134.
8181.9
140806.
19191.
8206.2
138124.
20578.
9236.6
129268.
20548.
9982.8
130251.
20524.
10729.6
131253.
20503.
11476.2
131991.
20311.
12119.9
131635.
Page 21
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Fuel as
Liquid
Ideal gas
Btu/lbm
19126.
18032.
17976.
18041.
18987.
17855.
18049.
18049.
18105.
18963.
19070.
19050.
19032.
18844.
3
Btu/ft
7179.
7053.
7031.
7057.
7886.
7645.
7729.
7729.
7753.
8583.
9279.
9975.
10670.
11260.
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
2-methylpropene
j
Volume of
Air Required
to Burn One
Vol. of Ideal
Gas
9.552
16.715
23.879
31.043
31.043
38.206
38.206
45.370
52.534
59.697
66.861
74.025
14.327
21.491
7.164
2.388
2.388
7.164
3.582
7.164
14.327
11.939
19.103
19.103
26.267
26.267
28.655
b,k
Heat of
Vaporization
14.696
psia
Btu/lbm
219.6
210.4
183.0
157.0
165.8
147.6
153.7
144.0
136.2
129.9
124.1
118.8
207.4
188.7
246.5
234.9
85.63
91.60
8.841
970.12
192.9
92.3
190.7
132.8
121.5
588.8
167.3
473.4
365.3
219.1
178.1
190.4
168.4
b,m
Specific Heat
Cp, ideal
gas
0.5266
0.4079
0.3873
0.3866
0.3949
0.3828
0.3879
0.3857
0.3841
0.3829
0.3820
0.3813
0.3573
0.3572
0.1992
0.2383
0.2483
0.2189
1.2404
0.44478
3.4076
0.2484
0.1908
0.1632
0.1138
0.4968
0.1474
0.3238
0.3306
0.3969
0.3445
0.3545
0.3417
0.3435
0.3693
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cv, ideal
gas
Cσ, sat.
liquid
60 °F
Btu/(lbm °F)
0.4028
0.3418
0.3423
0.3525
0.3608
0.3553
0.3603
0.3626
0.3643
0.3655
0.3665
0.3673
0.2865
0.3101
0.1541
0.1800
0.1774
0.1569
0.7442
0.33455
2.4225
0.1775
0.1363
0.1301
0.0858
0.3802
0.1164
0.2618
0.2875
0.3206
0.2950
0.3049
0.3050
0.3068
0.3339
0.9664
0.6183
0.5641
0.5692
0.5311
0.5427
0.5285
0.5268
0.5240
0.5192
0.5155
0.6036
0.6857
0.5088
1.0003
0.5262
0.3123
0.2324
1.1190
0.3295
0.5921
0.5644
1.2829
0.6062
0.5290
0.5340
0.5393
0.5543
n
Refractive
Index, nD
k=Cp/Cv
1.3073
1.1932
1.1316
1.0969
1.0947
1.0775
1.0764
1.0635
1.0544
1.0476
1.0423
1.0380
1.2471
1.1519
1.2929
1.3236
1.3996
1.3956
1.6667
1.3295
1.4067
1.3994
1.3995
1.2540
1.3264
1.3067
1.2664
1.2367
1.1499
1.2379
1.1680
1.1626
1.1204
1.1197
1.1060
4
Flammability
Limits
Lower
60 °F
1.00042
1.00072
1.00103
1.00123
1.00133
1.35639
1.35981
1.37673
1.38995
1.39960
1.40719
1.41384
1.31616
1.22624
Upper
5.0
2.9
2.0
1.8
1.5
1.3
1.4
1.1
1.0
0.8
0.7
0.7
2.9
2.1
15.0
13.0
9.5
8.5
9.0
8.0
8.3
7.7
7.0
6.5
5.6
5.4
32.0
11.1
4.3
45.5
4.0
12.5
74.2
74.2
15.5
27
5.5
3.28
1.5
44
19
100
2
1.62
1.6
12.5
10.3
10
1.36215
1.37799
1.34723
1.40230
1.35350
Page 22
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Motor
Method
D-357
Research
Method
D-908
-
-
+0.05
97.1
97.6
89.6
90.3
62.6
26
+1.6
+1.8
+0.1
93.8
92.3
61.7
24.8
75.6
84.9
+0.03
+0.2
100 °F, 14.696 psia
(volume % in air)
1.33416
1.33038
1.36328
5,o
Octane Number
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
Compound
1-butene
(E)-2-butene
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
3-methylhexane
3-ethylpentane
j
Volume of
Air Required
to Burn One
Vol. of Ideal
Gas
28.655
28.655
28.655
33.430
35.818
35.818
35.818
35.818
35.818
35.818
35.818
38.206
35.818
42.982
42.982
45.370
45.370
45.370
45.370
42.982
50.146
50.146
50.146
50.146
50.146
50.146
50.146
50.146
52.534
52.534
52.534
52.534
52.534
52.534
52.534
52.534
b,k
Heat of
Vaporization
14.696
psia
Btu/lbm
168.6
174.2
178.1
162.7
147.4
153.7
156.3
159.9
160.3
161.3
167.4
135.7
169.3
148.5
153.2
131.5
135.6
138.9
139.9
155.1
132.6
133.4
133.1
133.9
137.3
136.7
139.3
145.6
125.1
127.2
123.6
127.0
130.3
131.5
132.5
133.0
b,m
Specific Heat
Cp, ideal
gas
0.3535
0.3641
0.3353
0.3510
0.3808
0.3593
0.3655
0.3622
0.3277
0.3488
0.2734
0.3886
0.2401
0.3002
0.2898
0.3812
0.3747
0.3833
0.3774
0.2602
0.3144
0.3173
0.3171
0.3174
0.3165
0.3196
0.3154
0.3100
0.3859
0.3952
0.3777
0.3836
0.3713
0.3813
0.3789
0.3856
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cv, ideal
gas
Cσ, sat.
liquid
60 °F
Btu/(lbm °F)
0.3181
0.3287
0.2999
0.3219
0.3525
0.3309
0.3372
0.3339
0.2993
0.3205
0.2451
0.3610
0.2147
0.2766
0.2662
0.3581
0.3516
0.3603
0.3544
0.2386
0.2941
0.2971
0.2969
0.2972
0.2962
0.2994
0.2951
0.2897
0.3661
0.3753
0.3578
0.3638
0.3515
0.3615
0.3590
0.3657
0.5386
0.5445
0.5255
0.5189
0.5215
0.5190
0.5267
0.5253
0.5076
0.5115
0.4216
0.5374
0.4082
0.4410
0.4335
0.5148
0.5132
0.5232
0.5189
0.3993
0.4452
0.4456
0.4490
0.4504
0.4503
0.4408
0.4432
0.4306
0.5166
0.5241
0.4990
0.5022
0.5104
0.5216
0.5122
0.5141
n
Refractive
Index, nD
k=Cp/Cv
1.1113
1.1077
1.1180
1.0906
1.0803
1.0856
1.0840
1.0848
1.0946
1.0884
1.1155
1.0762
1.1184
1.0853
1.0886
1.0643
1.0655
1.0640
1.0650
1.0903
1.0688
1.0681
1.0681
1.0681
1.0683
1.0676
1.0685
1.0698
1.0541
1.0528
1.0554
1.0545
1.0564
1.0548
1.0552
1.0542
4
Flammability
Limits
Lower
60 °F
1.35392
1.35878
1.36853
1.42478
1.36182
1.39012
1.40889
1.50381
1.41208
1.42869
1.37141
1.37732
1.37402
1.37894
1.49919
1.41583
1.41228
1.41147
1.41408
1.42434
1.42528
1.42199
1.38450
1.38434
1.39170
1.39326
1.39421
1.38736
1.39097
1.39570
Page 23
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Upper
5,o
Octane Number
Motor
Method
D-357
Research
Method
D-908
80.8
97.4
83.5
81
100
99.1
100 °F, 14.696 psia
(volume % in air)
1.6
1.6
1.6
1.12
10
10
10
8.5
1.3
10
77.1
90.9
1.5
1.3
1.2
1
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.1
1.1
1.1
1
1.1
1.1
1
1
1.1
1
1
1
8.3
7.5
8
8.4
8.4
7
7
7
7.7
7.1
7.4
7.4
7.4
7.4
7.2
6.7
6.7
6.8
6.8
6.7
7
6.7
6.8
7
6.6
6.5
84.9
80.2
+2.8
80
77.2
93.4
94.3
73.5
74.3
+0.3
89.3
72.6
73.1
+0.1
85.5
71.1
61.2
40.2
95.6
83.8
+0.1
86.6
88.5
46.4
55.8
69.3
74.8
67.2
38.8
92.8
83.1
+1.8
80.8
91.1
42.4
52
65
91.3
83
91.8
+0.3
73.4
74.5
+5.8
92.3
80.6
79.2
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
Compound
styrene
ethylbenzene
p-xylene
m-xylene
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
2,3,4-trimethylpentane
2,3-dimethylhexane
2-methylheptane
j
Volume of
Air Required
to Burn One
Vol. of Ideal
Gas
47.758
50.146
50.146
50.146
50.146
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
59.697
59.697
59.697
59.697
59.697
59.697
59.697
59.697
59.697
b,k
Heat of
Vaporization
14.696
psia
Btu/lbm
151.2
144.2
144.6
146.2
147.3
119.8
122.1
121.8
123.3
124.2
124.7
124.6
124.5
125.7
125.4
125.5
124.4
127.2
125.5
127.5
126.4
129.0
130.4
129.3
132.5
131.2
138.7
115.3
119.5
120.7
118.1
122.4
122.2
121.9
125.2
127.1
b,m
Specific Heat
Cp, ideal
gas
0.2670
0.2780
0.2751
0.2733
0.2873
0.3309
0.3301
0.3301
0.3309
0.3301
0.3301
0.3181
0.3268
0.3164
0.3296
0.3296
0.3296
0.3261
0.3301
0.3173
0.3168
0.3269
0.3296
0.3120
0.3300
0.3384
0.3006
0.3756
0.3825
0.3763
0.3903
0.3759
0.3870
0.3884
0.3731
0.3808
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cv, ideal
gas
Cσ, sat.
liquid
60 °F
Btu/(lbm °F)
0.2479
0.2593
0.2564
0.2546
0.2686
0.3132
0.3125
0.3125
0.3132
0.3125
0.3125
0.3004
0.3091
0.2987
0.3119
0.3119
0.3119
0.3085
0.3125
0.2996
0.2991
0.3092
0.3119
0.2943
0.3123
0.3207
0.2829
0.3582
0.3652
0.3590
0.3730
0.3585
0.3696
0.3711
0.3557
0.3634
0.4095
0.4099
0.4028
0.4017
0.4149
0.4477
0.4556
0.4495
0.4494
0.4532
0.4557
0.4383
0.4357
0.4434
0.4514
0.4510
0.4471
0.4489
0.4543
0.4420
0.4363
0.4462
0.4558
0.4382
0.4509
0.4417
0.4498
0.4896
0.5126
0.5115
0.5232
0.4965
0.5056
0.5085
0.5075
0.5179
n
Refractive
Index, nD
k=Cp/Cv
1.0769
1.0721
1.0730
1.0735
1.0697
1.0565
1.0566
1.0566
1.0565
1.0566
1.0566
1.0589
1.0572
1.0592
1.0567
1.0567
1.0567
1.0574
1.0566
1.0591
1.0592
1.0572
1.0567
1.0601
1.0567
1.0552
1.0626
1.0485
1.0476
1.0484
1.0466
1.0485
1.0470
1.0469
1.0489
1.0478
4
Flammability
Limits
Lower
60 °F
1.54893
1.49798
1.49801
1.49932
1.50737
1.41329
1.41269
1.42496
1.42064
1.43121
1.43788
1.42924
1.42120
1.42788
1.42922
1.43801
1.42847
1.43501
1.46006
1.39361
1.39465
1.40503
1.40624
1.40351
1.39734
Page 24
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Upper
5,o
Octane Number
Motor
Method
D-357
Research
Method
D-908
100 °F, 14.696 psia
(volume % in air)
1.1
1
1.1
1
1
1.1
0.9
0.9
1
1
0.9
1
1
1
0.9
0.9
0.9
1
0.9
1
1
0.9
0.9
0.9
0.9
0.9
0.8
1
0.9
0.9
0.9
0.9
0.9
0.9
0.9
1
8
6.8
7
7
7
7.1
6.6
6.6
6.9
6.9
6.6
6.8
6.8
6.7
6.5
6.5
6.6
6.8
6.6
6.7
6.8
6.7
6.7
6.6
6.6
6.6
6.2
6
6.3
6.3
6.3
6.3
6.2
6.2
6.2
6.1
+0.2
97.9
+1.2
+2.8
100
83.5
-
79.5
89.2
62.2
85.9
64.2
59.8
59.8
68.3
87.3
66.9
57.6
57.6
68.2
71
76.2
67.2
71.7
81.1
78.6
28.1
40.8
58.2
100
77.4
55.7
69.9
99.9
83.4
95.9
78.9
23
80.9
31.2
46.5
71
100
72.5
55.5
65.2
+1.2
75.5
+0.2
71.3
20.6
+3
+0.8
+3.4
+4
87.7
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
Compound
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
3-methylheptane
isopropylbenzene
propylbenzene
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
2,4,4-trimethylhexane
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
j
Volume of
Air Required
to Burn One
Vol. of Ideal
Gas
59.697
59.697
59.697
59.697
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
66.861
66.861
66.861
66.861
66.861
66.861
66.861
b,k
Heat of
Vaporization
14.696
psia
Btu/lbm
125.3
125.8
127.1
127.6
131.9
134.6
136.2
135.6
138.5
137.5
139.1
142.0
113.2
115.8
118.8
118.2
115.4
119.6
117.6
119.1
119.6
116.3
120.2
119.9
121.4
124.3
126.5
124.6
123.1
108.9
112.1
111.5
111.9
113.2
114.8
115.5
b,m
Specific Heat
Cp, ideal
gas
0.3799
0.3690
0.3862
0.3777
0.3073
0.2940
0.2856
0.2861
0.2853
0.2991
0.2892
0.2991
0.3322
0.3322
0.3300
0.3292
0.3315
0.3315
0.3315
0.3315
0.3315
0.3322
0.3333
0.3315
0.3315
0.3286
0.3411
0.3390
0.3212
0.3890
0.3754
0.3775
0.3843
0.3807
0.3897
0.3829
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cv, ideal
gas
Cσ, sat.
liquid
60 °F
Btu/(lbm °F)
0.3625
0.3516
0.3688
0.3603
0.2908
0.2775
0.2691
0.2696
0.2688
0.2826
0.2727
0.2826
0.3165
0.3165
0.3143
0.3135
0.3158
0.3158
0.3158
0.3158
0.3158
0.3165
0.3176
0.3158
0.3158
0.3129
0.3254
0.3232
0.3054
0.3735
0.3599
0.3620
0.3688
0.3652
0.3742
0.3675
0.5155
0.5018
0.5247
0.5144
0.4204
0.4195
0.4241
0.4264
0.4084
0.4375
0.4198
0.4235
0.4402
0.4445
0.4553
0.4507
0.4435
0.4570
0.4503
0.4544
0.4556
0.4403
0.4527
0.4537
0.4569
0.4493
0.4552
0.4600
0.4318
0.4858
0.4990
0.4939
0.4958
0.5030
0.5205
0.5133
n
Refractive
Index, nD
k=Cp/Cv
1.0480
1.0494
1.0471
1.0483
1.0568
1.0595
1.0614
1.0613
1.0615
1.0585
1.0606
1.0585
1.0497
1.0497
1.0501
1.0502
1.0498
1.0498
1.0498
1.0498
1.0498
1.0497
1.0495
1.0498
1.0498
1.0503
1.0483
1.0487
1.0515
1.0415
1.0430
1.0428
1.0420
1.0424
1.0414
1.0421
4
Flammability
Limits
Lower
60 °F
1.40047
1.40642
1.40397
1.40058
1.49340
1.49408
1.49870
1.49709
1.50138
1.50563
1.50692
1.51559
1.43206
1.43091
1.44286
1.43360
1.43898
1.40894
1.40181
1.40925
Page 25
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Upper
5,o
Octane Number
Motor
Method
D-357
Research
Method
D-908
100 °F, 14.696 psia
(volume % in air)
0.9
0.9
0.9
0.9
0.9
0.8
0.9
0.9
0.9
0.9
0.9
0.9
0.8
0.9
0.9
0.9
0.8
0.8
0.9
0.9
0.8
0.8
0.8
0.9
0.9
0.8
0.8
0.8
0.8
0.9
0.8
0.8
0.8
0.8
0.8
0.8
6.1
6.1
6.1
6.1
6.5
6
6.2
6.2
6.1
6.2
6.4
6.4
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
5.9
6.5
6.5
6.2
6.1
6.1
6
5
6
6
6
5.9
5.7
5.9
39
81.7
52.4
35
99.3
98.7
100
97
+0.6
92.1
+0.6
+0.1
26.7
76.3
33.5
26.8
+2.1
+1.5
+1.8
+6
+0.2
+1.4
+0.5
82.6
56.4
70.1
81.3
59.1
68.5
81
74.3
83.4
72.9
82.6
28.2
81.3
33.4
82.5
61.1
86.2
62.8
14
17.8
60.5
50.3
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
Compound
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
j
Volume of
Air Required
to Burn One
Vol. of Ideal
Gas
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
57.309
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
71.637
71.637
b,k
Heat of
Vaporization
14.696
psia
Btu/lbm
114.3
116.0
115.4
116.0
114.2
116.2
114.6
115.0
118.7
119.1
125.2
121.9
119.2
145.1
122.4
124.3
123.6
125.7
125.4
124.7
127.9
120.3
128.1
125.0
128.0
128.1
122.9
129.3
131.6
130.2
131.6
134.6
135.5
136.5
115.1
119.0
b,m
Specific Heat
Cp, ideal
gas
0.3755
0.3791
0.3740
0.3860
0.3863
0.3826
0.3850
0.3824
0.3705
0.3735
0.3780
0.3795
0.3786
0.2372
0.3085
0.3078
0.3078
0.3099
0.3099
0.3099
0.3061
0.3117
0.3004
0.3117
0.3163
0.3050
0.3117
0.3137
0.3137
0.3137
0.3137
0.3293
0.3231
0.3295
0.3349
0.3465
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cv, ideal
gas
Cσ, sat.
liquid
60 °F
Btu/(lbm °F)
0.3600
0.3637
0.3585
0.3705
0.3708
0.3671
0.3695
0.3669
0.3550
0.3580
0.3625
0.3640
0.3631
0.2217
0.2937
0.2930
0.2930
0.2951
0.2951
0.2951
0.2913
0.2969
0.2857
0.2969
0.3015
0.2902
0.2969
0.2989
0.2989
0.2989
0.2989
0.3145
0.3083
0.3147
0.3208
0.3324
0.4986
0.5123
0.5044
0.5168
0.5098
0.5081
0.5036
0.4954
0.5051
0.5093
0.5415
0.5267
0.5142
0.3578
0.4222
0.4238
0.4250
0.4390
0.4157
0.4367
0.4426
0.4367
0.4247
0.4429
0.4516
0.4427
0.4392
0.4540
0.4566
0.4491
0.4517
0.4706
0.4239
0.4280
0.4405
0.4523
n
Refractive
Index, nD
k=Cp/Cv
1.0430
1.0426
1.0432
1.0418
1.0418
1.0422
1.0419
1.0422
1.0436
1.0433
1.0427
1.0425
1.0426
1.0699
1.0504
1.0505
1.0505
1.0501
1.0501
1.0501
1.0508
1.0498
1.0518
1.0498
1.0491
1.0510
1.0498
1.0495
1.0495
1.0495
1.0495
1.0470
1.0480
1.0470
1.0441
1.0426
4
Flammability
Limits
Lower
60 °F
1.40363
1.42543
1.49463
1.48860
1.49203
1.49209
1.49748
1.48873
1.50538
1.49677
1.44879
1.44271
Page 26
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Upper
5,o
Octane Number
Motor
Method
D-357
Research
Method
D-908
-
-
100 °F, 14.696 psia
(volume % in air)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.7
0.8
0.8
0.8
0.9
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.7
0.7
0.7
0.7
0.7
6
5.7
5.7
5.7
5.8
5.8
5.8
4.9
5.7
5.5
5.7
5.7
5.8
5.9
5.7
6
6.9
5.6
5.6
5.2
5.9
5.4
5.8
5.4
5.9
5.8
5.5
6.1
6.1
6.1
5.3
5.5
5.6
5.5
5.9
5.7
95
+3.6
+0.8
98
95.7
+3
+1.6
+0.7
97.7
96
97
94.5
+1.4
+0.6
+3
+1.8
+0.4
95.2
92.2
96
+0.6
+0.3
+0.6
91.9
+0.4
+0.2
+0.1
+0.5
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (FPS) becomes effective January 1, 2017
Notes 
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
n-undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
n-dodecane
n-tridecane
n-tetradecane
n-pentadecane
n-hexadecane
j
Volume of
Air Required
to Burn One
Vol. of Ideal
Gas
71.637
71.637
74.025
74.025
74.025
74.025
74.025
74.025
74.025
74.025
74.025
71.637
71.637
71.637
81.188
78.800
78.800
78.800
78.800
88.352
95.516
102.679
109.843
117.007
b,k
Heat of
Vaporization
14.696
psia
Btu/lbm
124.6
110.0
108.0
109.1
114.0
118.0
111.6
123.6
119.7
113.8
118.9
113.5
122.0
114.0
113.8
116.9
114.0
115.9
110.1
104.7
106.8
97.42
92.88
b,m
Specific Heat
Cp, ideal
gas
0.3186
0.3342
0.3814
0.3714
0.3843
0.3729
0.3774
0.3835
0.3785
0.3794
0.3772
0.3151
0.3176
0.3074
0.3810
0.3251
0.3215
0.3260
0.3133
0.3802
0.3799
0.3793
0.3794
0.3794
GPA 2145
Cv, ideal
gas
Cσ, sat.
liquid
60 °F
Btu/(lbm °F)
0.3045
0.3201
0.3675
0.3574
0.3704
0.3590
0.3635
0.3695
0.3645
0.3654
0.3633
0.3017
0.3042
0.2941
0.3683
0.3129
0.3093
0.3138
0.3011
0.3686
0.3692
0.3693
0.3700
0.3706
0.4307
0.4421
0.5118
0.4897
0.5067
0.5078
0.5237
0.5103
0.5391
0.5344
0.5128
0.4432
0.4256
0.4435
0.5219
0.3956
0.4386
0.4581
0.4389
0.5213
0.5218
0.5224
0.5227
0.5240
n
Refractive
Index, nD
k=Cp/Cv
1.0465
1.0442
1.0380
1.0391
1.0377
1.0389
1.0384
1.0378
1.0383
1.0382
1.0384
1.0444
1.0440
1.0456
1.0345
1.0391
1.0396
1.0390
1.0406
1.0316
1.0292
1.0271
1.0253
1.0237
Lower
60 °F
1.44057
1.49136
1.41921
1.50201
1.42360
1.42405
1.43054
1.43450
1.43623
Page 27
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
4
Flammability
Limits
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Upper
5,o
Octane Number
Motor
Method
D-357
Research
Method
D-908
-
-
100 °F, 14.696 psia
(volume % in air)
0.6
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.7
0.6
0.6
0.6
0.6
0.7
0.5
0.4
0.5
0.4
5.4
5.9
5.5
5.4
5.5
5.4
5.4
5.4
5.4
5.4
5.4
5.1
5.1
5.1
5
5
5
5
5
4.8
4.5
4.3
4.1
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes
a
b
c
b
h
b,d
e
f
b,d,g
p
b,d,i
b,d,i
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
j
b,k
b,m
n
4
5,o
Compound
Formula
Molar Mass
Boiling Temperature (K, 101.325 kPa)
Triple Point Temperature (K)
Vapor Pressure
15 °C (kPa)
40 °C (kPa)
Critical Constants
Temperature (K)
Pressure (kPa)
3
Density (kg/m )
Acentric Factor
Density of Liquid (15 °C, 101.325 kPa)
Relative density (15 °C/15 °C)
API gravity
3
Density (kg/m )
Temp. coef. of density (1/K, at 15 °C sat.)
Density of Ideal Gas (15 °C, 101.325 kPa)
Relative density
3
Volume (m /kg)
3
Density (kg/m )
Volume (15 °C, 101.325 kPa)
3
Liquid (cm /mol)
Ratio (ideal gas/liquid)
Summation Factor (15 °C)
2
0.5
Z=1-P*b (1/kPa )
2
Z=1-P/P0*b (P0=101.325 kPa)
Compressibility Factor at 15 °C (sat.)
Gross Heating Value (15 °C, ideal reaction)
Fuel as Liquid (MJ/kg)
3
Fuel as Liquid (MJ/m )
Fuel as Ideal gas (MJ/kg)
3
Fuel as Ideal gas (MJ/m )
Net Heating Value (15 °C, ideal reaction)
Fuel as Liquid (MJ/kg)
3
Fuel as Ideal gas (MJ/m )
Volume of Air Required to Burn
One Volume of Ideal Gas
Heat of Vaporization (101.325 kPa)
kJ/kg
Specific Heat (15 °C)
Cp [kJ/(kg-K)] (ideal gas)
Cv [kJ/(kg-K)] (ideal gas)
p
Cσ [kJ/(kg-K)] (sat. liquid)
k=Cp/Cv
Refractive Index , nD (15 °C)
Flammability Limits (310.93 K, 101.325 kPa)
Lower (volume % in air)
Upper (volume % in air)
Octane Number
Motor Method D-357
Research Method D-908
methane
CH4
16.0425
111.67
90.69
ethane
C2H6
30.0690
184.57
90.37
propane
C3H8
44.0956
231.04
85.53
isobutane
C4H10
58.1222
261.40
113.73
n-butane
C4H10
58.1222
272.66
134.90
isopentane
C5H12
72.1488
300.98
112.65
n-pentane
C5H12
72.1488
309.21
143.47
35000.
3375.5
5500.
731.51
1369.4
258.99
531.21
176.15
378.49
63.57
151.51
46.45
115.67
190.56
4599.
162.66
0.0114
305.32
4872.2
206.18
0.0995
369.89
4251.2
220.48
0.1521
407.81
3629.
225.50
0.1835
425.13
3796.
228.00
0.2008
460.35
3378.
236.00
0.2274
469.70
3370.
232.00
0.2515
0.3
340.
300.
0.35817
263.56
357.85
-0.01277
0.50796
147.07
507.50
-0.00299
0.56346
119.63
562.95
-0.00217
0.58478
110.47
584.25
-0.00194
0.62564
94.668
625.08
-0.00160
0.63119
92.68
630.62
-0.00154
0.5539
1.4739
0.67848
1.0382
0.7864
1.2717
1.5225
0.5362
1.8649
2.0068
0.4068
2.4581
2.0068
0.4068
2.4581
2.4911
0.3277
3.0514
2.4911
0.3277
3.0514
53.475
442.17
84.027
281.40
86.888
272.13
103.25
229.02
99.482
237.68
115.42
204.85
114.41
206.67
0.00442
0.04453
0.00910
0.0916
0.5834
0.0132
0.1333
0.8514
0.0168
0.1695
0.9198
0.0179
0.1807
0.9394
0.0220
0.2214
0.9682
0.0232
0.2330
0.9744
55.575
37.706
51.604
18467.
51.951
66.066
49.990
25370.
50.369
93.934
49.038
27606.
49.388
121.40
49.166
28725.
49.546
121.79
48.593
30375.
48.950
149.36
48.668
30691.
49.045
149.65
33.95
47.172
60.43
45.961
86.42
45.216
112.0
45.345
112.4
44.898
138.1
44.974
138.4
9.552
16.715
23.879
31.043
31.043
38.206
38.206
510.8
489.4
425.6
365.1
385.7
343.3
357.6
2.2036
1.6853
1.3075
1.00042
1.7054
1.4289
4.0050
1.1935
1.00072
1.6191
1.4305
2.5840
1.1318
1.00103
1.6162
1.4731
2.3586
1.0971
1.00123
1.6511
1.5080
2.3805
1.0949
1.00133
1.6003
1.4851
2.2208
1.0776
1.35669
1.6216
1.5064
2.2698
1.0765
1.36010
5.0
15.0
2.9
13.0
2.0
9.5
1.8
8.5
1.5
9.0
1.3
8.0
1.4
8.3
+0.05
+1.6
97.1
+1.8
97.6
+0.1
89.6
93.8
90.3
92.3
62.6
61.7
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Page 28
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Compound
Formula
Molar Mass
Boiling Temperature (K, 101.325 kPa)
Triple Point Temperature (K)
Vapor Pressure
15 °C (kPa)
40 °C (kPa)
Critical Constants
Temperature (K)
Pressure (kPa)
3
Density (kg/m )
Acentric Factor
Density of Liquid (15 °C, 101.325 kPa)
Relative density (15 °C/15 °C)
API gravity
3
Density (kg/m )
Temp. coef. of density (1/K, at 15 °C sat.)
Density of Ideal Gas (15 °C, 101.325 kPa)
Relative density
3
Volume (m /kg)
3
Density (kg/m )
Volume (15 °C, 101.325 kPa)
3
Liquid (cm /mol)
Ratio (ideal gas/liquid)
Summation Factor (15 °C)
2
0.5
Z=1-P*b (1/kPa )
2
Z=1-P/P0*b (P0=101.325 kPa)
Compressibility Factor at 15 °C (sat.)
Gross Heating Value (15 °C, ideal reaction)
Fuel as Liquid (MJ/kg)
3
Fuel as Liquid (MJ/m )
Fuel as Ideal gas (MJ/kg)
3
Fuel as Ideal gas (MJ/m )
Net Heating Value (15 °C, ideal reaction)
Fuel as Liquid (MJ/kg)
3
Fuel as Ideal gas (MJ/m )
Volume of Air Required to Burn
One Volume of Ideal Gas
Heat of Vaporization (101.325 kPa)
kJ/kg
Specific Heat (15 °C)
Cp [kJ/(kg-K)] (ideal gas)
Cv [kJ/(kg-K)] (ideal gas)
p
Cσ [kJ/(kg-K)] (sat. liquid)
k=Cp/Cv
Refractive Index , nD (15 °C)
Flammability Limits (310.93 K, 101.325 kPa)
Lower (volume % in air)
Upper (volume % in air)
Octane Number
Motor Method D-357
Research Method D-908
n-hexane
C6H14
86.1754
341.86
177.83
n-heptane
C7H16
100.2019
371.53
182.55
n-octane
C8H18
114.2285
398.77
216.37
n-nonane
C9H20
128.2551
423.91
219.70
n-decane
C10H22
142.2817
447.27
243.50
12.86
37.292
3.622
12.326
1.030
4.1263
0.3010
1.414
0.08827
0.4867
507.50
3012.
233.18
0.2986
540.13
2736.
232.00
0.3494
568.83
2487.
234.90
0.3971
594.6
2281.
232.14
0.4433
617.7
2103.
233.34
0.4884
282.35
5042.
214.24
0.0866
364.21
4555.
229.63
0.1461
0.66452
81.436
663.92
-0.00137
0.68864
73.977
688.02
-0.00122
0.70693
68.661
706.30
-0.00114
0.72262
64.315
721.97
-0.00109
0.73496
61.027
734.30
-0.00106
0.56815
117.55
567.64
0.52346
138.82
522.99
-0.00321
2.9754
0.2744
3.6446
3.4597
0.2360
4.2378
3.9440
0.2070
4.8310
4.4283
0.1844
5.4242
4.9126
0.1662
6.0174
0.9686
0.8429
1.1864
1.4529
0.5619
1.7797
129.8
182.17
145.64
162.35
161.73
146.20
177.65
133.10
193.77
122.03
49.42
478.4
80.46
293.9
0.0296
0.2984
0.9886
0.0364
0.3660
0.9952
0.0431
0.4343
0.9981
0.0500
0.5028
0.9992
0.0595
0.5991
0.9997
0.0079
0.0798
0.0125
0.1258
0.8362
48.342
32095.
48.715
177.55
48.103
33096.
48.474
205.42
47.919
33845.
48.290
233.29
47.784
34498.
48.152
261.19
47.671
35004.
48.037
289.06
50.337
59.721
48.557
25395.
48.941
87.097
44.735
164.39
44.555
190.39
44.418
216.38
44.320
242.40
44.236
268.39
55.96
45.390
81.46
45.370
52.534
59.697
66.861
74.025
14.327
21.491
334.9
316.9
302.2
288.6
276.4
482.4
439.0
1.6125
1.5160
2.2104
1.0636
1.37698
1.6057
1.5227
2.2038
1.0545
1.39024
1.6008
1.5280
2.1918
1.0476
1.39987
1.5967
1.5319
2.1719
1.0423
1.40742
1.5938
1.5354
2.1562
1.0381
1.41409
1.4941
1.1977
1.4937
1.2961
2.5227
1.1525
1.31657
1.1
7.7
1.0
7.0
0.8
6.5
0.7
5.6
0.7
5.4
2.9
32.0
2.1
11.1
75.6
+0.03
84.9
+0.2
26
24.8
ethylene
C2H4
28.0532
169.38
103.99
892.0
1648.5
1.2475
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
propylene
C3H6
42.0797
225.53
87.95
Page 29
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Compound
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Formula
Molar Mass
Boiling Temperature (K, 101.325 kPa)
Triple Point Temperature (K)
Vapor Pressure
15 °C (kPa)
40 °C (kPa)
Critical Constants
Temperature (K)
Pressure (kPa)
3
Density (kg/m )
Acentric Factor
Density of Liquid (15 °C, 101.325 kPa)
Relative density (15 °C/15 °C)
API gravity
3
Density (kg/m )
Temp. coef. of density (1/K, at 15 °C sat.)
Density of Ideal Gas (15 °C, 101.325 kPa)
Relative density
3
Volume (m /kg)
3
Density (kg/m )
Volume (15 °C, 101.325 kPa)
3
Liquid (cm /mol)
Ratio (ideal gas/liquid)
Summation Factor (15 °C)
2
0.5
Z=1-P*b (1/kPa )
2
Z=1-P/P0*b (P0=101.325 kPa)
Compressibility Factor at 15 °C (sat.)
Gross Heating Value (15 °C, ideal reaction)
Fuel as Liquid (MJ/kg)
3
Fuel as Liquid (MJ/m )
Fuel as Ideal gas (MJ/kg)
3
Fuel as Ideal gas (MJ/m )
Net Heating Value (15 °C, ideal reaction)
Fuel as Liquid (MJ/kg)
3
Fuel as Ideal gas (MJ/m )
Volume of Air Required to Burn
One Volume of Ideal Gas
Heat of Vaporization (101.325 kPa)
kJ/kg
Specific Heat (15 °C)
Cp [kJ/(kg-K)] (ideal gas)
Cv [kJ/(kg-K)] (ideal gas)
p
Cσ [kJ/(kg-K)] (sat. liquid)
k=Cp/Cv
Refractive Index , nD (15 °C)
Flammability Limits (310.93 K, 101.325 kPa)
Lower (volume % in air)
Upper (volume % in air)
Octane Number
Motor Method D-357
Research Method D-908
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
carbon
dioxide
CO2
44.0095
194.69
216.59
hydrogen
sulfide
H2S
34.0809
212.85
187.70
hydrogen
H2
2.0159
20.37
13.96
carbon
monoxide
CO
28.0101
81.64
68.16
5087.
1565.
2863.
304.1
7377.
467.60
0.2239
373.1
9000.
347.28
0.1005
126.19
3396.
313.30
0.0372
154.58
5043.
436.14
0.0222
5.1953
228.32
69.58
-0.3836
647.10
22064.
322.00
0.3443
33.150
1296.4
31.26
-0.2187
132.86
3494.0
303.91
0.0497
0.82195
40.652
821.2
-0.01392
0.8001
45.353
799.4
-0.00306
0.80680
43.884
806.1
1.1422
-7.62
1141.2
0.12478
1002.5
124.67
1.00000
10.000
999.102
-0.00015
0.070912
1863.9
70.848
0.79393
46.727
793.21
1.5195
0.5373
1.8613
1.1767
0.6938
1.4414
0.9672
0.8441
1.1848
1.1048
0.7389
1.3533
0.13820
5.9074
0.16928
0.62202
1.3125
0.76191
0.0696
11.7293
0.0853
0.9671
0.8442
1.1846
53.59
441.2
42.63
554.6
34.753
680.4
28.040
843.3
32.106
736.47
18.031
1311.3
28.45
831.0
35.31
669.6
0.00745
0.0750
0.5814
0.00913
0.0920
0.8475
0.00170
0.01712
0.00275
0.02764
nitrogen
N2
28.0134
77.355
63.151
oxygen
O2
31.9988
90.188
54.361
helium
He
4.0026
4.2238
2.1768
water
H2O
18.0153
373.12
273.16
1.7058
7.3849
0.02495
0.2511
0.9989
16.031
12815.
16.501
23.784
2.4662
1.8790
0.00216
0.0217
141.95
12.102
10.100
11.965
14.727
21.905
10.223
11.965
7.164
2.388
2.388
573.3
546.4
199.2
213.1
20.564
2256.5
448.7
214.7
0.8334
0.6445
2.8376
1.2931
1.22994
0.9976
0.7536
2.1277
1.3237
1.0395
0.7427
0.9166
0.6568
5.1932
3.1159
14.2647
10.1402
1.0400
0.7432
1.3996
1.3956
1.6667
1.8620
1.4005
4.1888
1.3295
1.33424
1.4067
1.3994
4
74.2
12.5
74.2
4.3
45.5
GPA 2145
Page 30
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
2-methylpropene
1-butene
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Formula
CH4
C2H6
C3H8
C4H10
C4H10
C5H12
C5H12
C6H14
C7H16
C8H18
C9H20
C10H22
C2H4
C3H6
CO2
H2S
N2
O2
He
H2O
H2
CO
HCl
COS
Cl2
NH3
SO2
CH4O
C2H6O
C2H2
C3H4
C3H4
C4H6
C4H6
C4H8
C4H8
a
Molar
Mass
b
Boiling
Temp.
101.325
kPa
c
Triple
Point
Temp.
15 °C
K
16.0425
30.0690
44.0956
58.1222
58.1222
72.1488
72.1488
86.1754
100.2019
114.2285
128.2551
142.2817
28.0532
42.0797
44.0095
34.0809
28.0134
31.9988
4.0026
18.0153
2.0159
28.0101
36.4609
60.0751
70.9060
17.0305
64.0638
32.0419
46.0684
26.0373
40.0639
40.0639
54.0904
54.0904
56.1063
56.1063
111.67
184.57
231.04
261.40
272.66
300.98
309.21
341.86
371.53
398.77
423.91
447.27
169.38
225.53
194.69
212.85
77.355
90.188
4.2238
373.12
20.37
81.64
188.18
222.99
239.18
239.82
263.13
337.63
351.57
239.02
248.01
268.60
284.11
266.15
266.84
GPA 2145
b
Vapor Pressure
40 °C
kPa
90.69
90.37
85.53
113.73
134.90
112.65
143.47
177.83
182.55
216.37
219.70
243.50
103.99
87.95
216.59
187.70
63.151
54.361
2.1768
273.16
13.96
68.16
159.01
134.31
172.20
195.50
197.70
175.61
159.00
191.66
136.70
170.50
164.27
136.95
132.40
87.80
3375.5
731.51
258.99
176.15
63.57
46.45
12.86
3.622
1.030
0.3010
0.08827
h
Acentric
Factor
Critical Constants
35000.
5500.
1369.4
531.21
378.49
151.51
115.67
37.292
12.326
4.1263
1.414
0.4867
892.0
5087.
1565.
1648.5
1.7058
7.3849
3786.
991.3
586.8
728.5
277.1
9.899
4.328
3840.
598.9
432.1
204.5
117.3
222.6
216.9
6586.
1826.
1148.
1555.
630.6
35.52
17.88
2863.
1170.
880.0
436.0
264.9
469.2
457.4
Page 31
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Temp.
K
190.56
305.32
369.89
407.81
425.13
460.35
469.70
507.50
540.13
568.83
594.6
617.7
282.35
364.21
304.1
373.1
126.19
154.58
5.1953
647.10
33.150
132.86
324.55
378.77
416.87
405.40
430.64
513.38
514.71
308.40
393.88
402.38
425.09
456.50
418.09
419.29
Pressure
kPa
4599.
4872.2
4251.2
3629.
3796.
3378.
3370.
3012.
2736.
2487.
2281.
2103.
5042.
4555.
7377.
9000.
3396.
5043.
228.32
22064.
1296.4
3494.0
8288.1
6368.8
7977.8
11333.0
7884.0
8215.9
6268.0
6206.3
6276.7
5626.0
4270.8
4846.0
4009.8
4005.1
Density
3
kg/m
162.66
206.18
220.48
225.50
228.00
236.00
232.00
233.18
232.00
234.90
232.14
233.34
214.24
229.63
467.60
347.28
313.30
436.14
69.58
322.00
31.26
303.91
430.24
445.04
544.85
225.00
525.00
281.49
273.19
221.45
243.20
244.92
242.80
247.45
233.96
237.89
0.0114
0.0995
0.1521
0.1835
0.2008
0.2274
0.2515
0.2986
0.3494
0.3971
0.4433
0.4884
0.0866
0.1461
0.2239
0.1005
0.0372
0.0222
-0.3836
0.3443
-0.2187
0.0497
0.1282
0.0977
0.0875
0.2560
0.2557
0.5625
0.6461
0.1983
0.1865
0.2036
0.1890
0.1816
0.1926
0.1919
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
Compound
(E)-2-butene
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
3-methylhexane
3-ethylpentane
styrene
ethylbenzene
Formula
C4H8
C4H8
C5H8
C5H10
C5H10
C5H10
C5H10
C5H10
C5H10
C5H10
C5H12
C6H6
C6H12
C6H12
C6H14
C6H14
C6H14
C6H14
C7H8
C7H14
C7H14
C7H14
C7H14
C7H14
C7H14
C7H14
C7H14
C7H16
C7H16
C7H16
C7H16
C7H16
C7H16
C7H16
C7H16
C8H8
C8H10
a
Molar
Mass
56.1063
56.1063
68.1170
70.1329
70.1329
70.1329
70.1329
70.1329
70.1329
70.1329
72.1488
78.1118
84.1595
84.1595
86.1754
86.1754
86.1754
86.1754
92.1384
98.1861
98.1861
98.1861
98.1861
98.1861
98.1861
98.1861
98.1861
100.2019
100.2019
100.2019
100.2019
100.2019
100.2019
100.2019
100.2019
104.1491
106.1650
b
Boiling
Temp.
101.325
kPa
274.03
276.87
307.20
293.20
303.11
304.25
309.48
310.08
311.59
322.40
282.65
353.22
344.94
353.86
322.87
331.12
333.36
336.40
383.75
360.96
363.88
364.86
365.00
372.65
374.01
376.61
391.94
352.32
353.62
353.99
359.19
362.95
363.12
364.91
366.59
418.41
409.31
GPA 2145
c
Triple
Point
Temp.
b
Vapor Pressure
15 °C
K
167.60
134.30
127.06
104.74
108.02
135.62
132.95
121.80
139.43
179.70
256.60
278.67
130.73
279.86
174.20
145.07
119.60
110.26
178.00
203.72
139.29
139.48
154.70
219.48
146.59
134.73
265.13
149.44
153.99
248.59
138.76
149.37
154.92
153.77
154.60
242.50
178.20
40 °C
kPa
168.6
152.8
49.98
84.45
58.54
55.80
45.66
44.62
42.21
28.11
123.0
7.847
11.69
8.139
28.54
20.57
18.35
16.40
2.218
6.272
5.533
5.317
5.272
3.809
3.744
3.205
1.699
8.840
8.225
8.646
6.899
5.652
5.352
4.993
4.697
0.4467
0.7044
366.6
337.6
123.8
195.0
141.7
136.7
114.8
112.5
106.8
73.99
269.9
24.39
33.87
24.64
73.42
55.37
50.71
45.74
7.892
19.39
17.36
16.78
16.66
12.55
12.20
10.76
6.124
26.32
24.86
25.43
20.93
17.75
17.22
16.15
15.27
1.939
2.875
Temp.
K
428.61
435.75
474.90
452.69
464.74
467.00
473.80
474.89
470.35
511.72
433.74
562.02
532.78
553.60
489.09
500.16
497.70
504.56
591.75
557.00
551.00
552.00
555.00
566.00
572.20
569.48
604.26
520.62
519.95
531.27
536.37
537.47
530.37
535.36
540.67
635.20
617.12
Page 32
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
h
Acentric
Factor
Critical Constants
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Pressure
kPa
4027.3
4225.5
3808.1
3510.4
3546.9
3646.7
3633.1
3691.7
3415.2
4582.8
3196.0
4907.3
3779.5
4080.5
3101.8
3132.8
3040.0
3123.1
4126.3
3818.0
3347.9
3356.5
3472.2
3513.9
3500.5
3396.9
3858.4
2767.9
2734.7
2944.7
2938.8
2911.1
2734.1
2801.3
2900.3
3883.4
3622.4
Density
3
kg/m
236.38
238.12
229.24
230.00
233.00
238.07
235.68
232.51
234.79
274.92
235.93
304.71
261.64
271.33
236.12
239.28
233.97
233.73
291.99
260.98
257.69
256.14
258.41
263.15
266.99
260.09
277.61
241.00
240.00
247.68
242.00
253.63
237.87
245.55
241.00
292.15
291.00
0.2101
0.2024
0.2298
0.2065
0.2357
0.2408
0.2483
0.2536
0.2815
0.2019
0.1961
0.2109
0.2290
0.2096
0.2323
0.2464
0.2797
0.2719
0.2657
0.2393
0.2605
0.2657
0.2584
0.2678
0.2378
0.2707
0.2433
0.2849
0.3004
0.2478
0.2664
0.2949
0.3287
0.3189
0.3108
0.3026
0.3050
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
Compound
p-xylene
m-xylene
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
2,3,4-trimethylpentane
2,3-dimethylhexane
2-methylheptane
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
Formula
C8H10
C8H10
C8H10
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H16
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
C8H18
a
Molar
Mass
106.1650
106.1650
106.1650
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
112.2126
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
114.2285
b
Boiling
Temp.
101.325
kPa
411.47
412.21
417.52
378.01
382.92
383.21
386.85
389.86
390.82
392.47
392.65
393.21
393.75
394.33
394.38
394.64
395.52
397.43
397.57
399.53
401.17
402.85
404.06
404.90
424.29
372.36
379.96
382.23
382.53
382.96
385.10
386.60
388.73
390.78
390.83
390.85
391.66
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
c
Triple
Point
Temp.
b
Vapor Pressure
15 °C
K
286.40
225.30
247.99
130.61
142.33
160.45
251.46
141.90
160.27
236.25
239.84
183.10
164.40
129.35
156.68
185.77
197.64
161.69
167.21
223.32
155.81
161.87
287.97
165.77
151.96
182.01
160.70
146.99
163.81
164.21
152.15
kPa
0.6474
0.6116
0.4855
3.203
2.509
2.523
2.209
1.909
1.798
1.782
1.768
1.681
1.649
1.615
1.674
1.530
1.512
1.395
1.359
1.244
1.113
1.114
0.9279
0.9743
0.4004
3.997
2.688
2.378
2.383
2.546
2.245
2.120
1.809
1.568
1.567
1.667
1.535
h
Acentric
Factor
Critical Constants
40 °C
2.655
2.534
2.061
10.61
8.649
8.642
7.640
6.747
6.429
6.287
6.256
6.003
5.899
5.787
5.923
5.566
5.482
5.090
5.007
4.622
4.231
4.169
3.644
3.737
1.729
12.97
9.323
8.424
8.396
8.715
7.875
7.467
6.602
5.890
5.883
6.122
5.755
Page 33
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Temp.
K
616.17
616.89
630.26
564.00
565.00
567.00
579.00
577.00
577.00
587.66
598.00
588.90
586.00
587.00
589.00
595.00
585.00
603.19
587.67
605.00
599.00
605.60
598.00
606.90
647.36
544.00
549.88
550.01
553.00
563.46
561.98
566.37
563.45
559.63
561.70
568.81
565.45
Pressure
kPa
3531.5
3534.6
3737.5
2966.5
2869.2
2856.1
3059.3
2868.0
2854.1
3037.0
3456.9
3098.0
2957.0
2957.0
2957.0
3345.5
2854.2
3431.7
2879.1
3435.8
3184.0
3205.5
3084.0
3285.8
3549.6
2572.0
2527.3
2487.7
2557.6
2726.0
2655.4
2706.2
2628.3
2502.1
2541.2
2691.8
2605.1
Density
3
kg/m
286.00
282.93
285.00
254.29
252.21
254.32
259.95
255.83
257.66
255.82
262.33
251.93
254.96
258.06
257.35
261.34
258.69
258.40
262.16
259.31
260.77
264.24
256.96
257.35
273.70
242.16
237.75
235.55
234.67
260.01
257.67
247.31
244.00
234.00
238.67
245.00
249.97
0.3240
0.3261
0.3118
0.2731
0.3058
0.2920
0.2722
0.2923
0.3005
0.2679
0.2527
0.2742
0.2818
0.2808
0.2681
0.2777
0.2931
0.2605
0.2990
0.2695
0.2962
0.2722
0.3201
0.2939
0.2498
0.3035
0.3370
0.3562
0.3468
0.2967
0.3210
0.3117
0.3464
0.3809
0.3708
0.3383
0.3604
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
Compound
3-methylheptane
isopropylbenzene
propylbenzene
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
2,4,4-trimethylhexane
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Formula
C8H18
C9H12
C9H12
C9H12
C9H12
C9H12
C9H12
C9H12
C9H12
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H18
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
a
Molar
Mass
114.2285
120.1916
120.1916
120.1916
120.1916
120.1916
120.1916
120.1916
120.1916
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
126.2392
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
b
Boiling
Temp.
101.325
kPa
392.04
425.50
432.35
434.45
435.13
437.91
438.29
442.52
449.23
407.68
409.76
411.72
413.75
414.71
415.13
416.41
416.69
418.56
418.74
421.25
422.85
424.30
427.56
429.33
429.86
435.76
395.39
397.16
399.82
403.77
404.00
405.63
405.76
406.90
407.80
408.02
408.63
GPA 2145
c
Triple
Point
Temp.
b
Vapor Pressure
15 °C
K
152.67
177.14
173.63
177.46
210.31
228.46
192.43
229.36
247.83
204.60
229.10
186.00
206.34
243.97
157.92
187.46
183.23
165.20
178.20
288.10
206.62
167.29
150.70
159.79
145.26
160.10
170.03
kPa
1.488
0.3327
0.2406
0.2049
0.1976
0.1868
0.1729
0.1359
0.1006
0.9989
0.8435
0.7014
0.6449
0.7267
0.5744
0.6070
0.5611
0.5246
0.6319
0.4754
0.4417
0.3918
0.3399
0.2714
0.2960
0.2866
1.549
1.255
1.209
1.022
0.9622
0.8286
0.8129
0.8501
0.7316
0.7518
0.7228
40 °C
5.619
1.484
1.118
0.9788
0.9568
0.8632
0.8406
0.6849
0.5208
3.720
3.252
2.862
2.614
2.818
2.384
2.454
2.316
2.177
2.472
1.984
1.865
1.690
1.476
1.249
1.327
1.226
5.588
4.783
4.543
3.904
3.750
3.348
3.293
3.359
3.012
3.064
2.962
Page 34
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
h
Acentric
Factor
Critical Constants
Temp.
K
563.68
631.16
638.29
638.40
640.20
637.31
645.80
649.12
664.72
602.00
605.00
597.00
602.16
610.00
602.00
608.00
606.00
608.00
621.00
617.00
616.00
616.00
632.20
625.00
630.80
651.00
574.61
569.88
580.00
598.00
580.20
576.90
576.65
585.00
578.70
580.70
581.20
Pressure
kPa
2542.6
3186.7
3201.2
3143.9
3234.1
3127.8
3207.4
3261.5
3450.0
2685.4
2800.8
2638.4
2648.9
2648.8
2648.8
2651.5
2651.5
2645.2
2771.7
2752.7
2658.2
2648.8
3059.8
2888.7
2860.0
3006.4
2485.1
2457.3
2540.4
2958.1
2428.4
2359.1
2349.5
2440.3
2357.8
2358.9
2352.1
Density
3
kg/m
244.58
284.82
272.70
272.12
269.70
276.38
271.93
274.77
284.37
255.34
257.20
252.93
255.06
254.54
257.33
257.63
245.20
258.11
261.79
255.10
260.90
260.53
261.06
254.43
260.05
254.02
241.27
233.37
237.99
242.10
239.57
236.58
235.21
234.79
234.23
234.40
237.50
0.3690
0.3219
0.3449
0.3575
0.3654
0.3993
0.3537
0.3817
0.3649
0.2765
0.2930
0.3469
0.3316
0.2868
0.3474
0.3181
0.3351
0.3394
0.2715
0.3195
0.3291
0.3423
0.3214
0.3657
0.3262
0.2725
0.3119
0.3641
0.3287
0.3013
0.3550
0.3882
0.3901
0.3520
0.3987
0.3848
0.3866
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
Compound
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
Formula
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C9H20
C10H8
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H14
C10H20
C10H20
C10H20
C10H20
C10H22
C10H22
C10H22
a
Molar
Mass
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.2551
128.1705
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
134.2182
140.2658
140.2658
140.2658
140.2658
142.2817
142.2817
142.2817
b
Boiling
Temp.
101.325
kPa
409.85
410.23
411.70
413.39
413.46
413.77
415.21
416.12
417.00
491.14
442.26
445.87
446.45
448.19
450.27
451.26
454.27
454.77
456.43
456.49
456.57
456.89
457.73
459.40
462.47
463.21
467.01
470.26
471.32
478.00
444.72
454.10
475.46
b
Vapor Pressure
15 °C
K
156.37
263.40
157.20
192.84
165.18
353.37
215.31
221.55
197.68
209.38
205.10
201.62
189.22
190.61
185.34
209.47
241.74
229.88
212.84
219.45
206.27
256.82
223.65
352.35
249.33
266.41
231.98
198.47
283.50
427.49
429.00
433.58
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
c
Triple
Point
Temp.
kPa
0.7644
0.6969
0.7353
0.7013
0.5478
0.5314
0.3383
0.4134
0.4673
0.01590
0.1524
0.1328
0.1271
0.1105
0.1001
0.1003
0.07522
0.1001
0.07118
0.07419
0.06747
0.06692
0.08242
0.05646
0.04378
0.04890
0.03908
0.03278
0.02677
0.02227
0.1596
0.08729
0.03992
0.2784
0.3141
0.2529
h
Acentric
Factor
Critical Constants
40 °C
3.046
2.845
2.916
2.792
2.344
2.289
1.659
1.885
2.039
0.09896
0.7452
0.6625
0.6328
0.5626
0.5123
0.5145
0.4067
0.5037
0.3849
0.3937
0.3701
0.3690
0.4277
0.3218
0.2576
0.2771
0.2290
0.1925
0.1641
0.1367
0.7643
0.4556
0.2196
1.299
1.398
1.156
Page 35
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Temp.
K
587.50
590.00
596.10
607.51
588.00
587.90
574.80
582.83
592.70
748.33
648.08
650.28
652.50
652.00
653.80
657.00
654.40
655.40
660.48
657.40
659.40
657.90
660.80
661.00
665.00
671.00
676.00
675.68
679.20
691.00
652.00
653.10
709.00
603.00
596.80
607.00
611.00
Pressure
kPa
2366.3
2516.0
2498.1
2742.3
2419.6
2421.3
2366.0
2302.5
2420.7
4038.9
2998.4
3045.9
2940.4
2874.0
2799.2
2865.4
2760.3
2523.5
2887.1
2648.8
2835.1
2798.1
2618.0
2843.8
2880.4
2908.8
2929.2
2883.2
2962.1
3106.2
2824.7
2556.1
3225.9
2366.6
2133.1
2196.5
2155.9
Density
3
kg/m
239.48
242.30
243.55
249.73
239.98
238.06
241.59
234.21
237.75
314.39
280.40
272.25
274.00
273.97
272.25
277.96
273.00
272.26
269.70
271.07
277.52
271.93
275.61
275.91
274.54
279.83
279.61
274.65
278.04
279.20
261.30
256.69
271.12
259.52
234.84
238.90
238.66
0.3525
0.3633
0.3302
0.3044
0.3998
0.4045
0.5319
0.4550
0.4027
0.3024
0.3513
0.3794
0.3549
0.3656
0.3635
0.3615
0.3945
0.3552
0.3927
0.3788
0.3940
0.4026
0.3627
0.4132
0.4215
0.3905
0.3970
0.4257
0.4226
0.4284
0.3258
0.3698
0.3063
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
0.4361
0.3814
0.3928
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
dodecane
tridecane
tetradecane
pentadecane
hexadecane
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Formula
C10H22
C10H22
C10H22
C10H22
C10H22
C10H22
C11H16
C11H16
C11H16
C11H24
C12H18
C12H18
C12H18
C12H18
C12H26
C13H28
C14H30
C15H32
C16H34
a
Molar
Mass
142.2817
142.2817
142.2817
142.2817
142.2817
142.2817
148.2447
148.2447
148.2447
156.3083
162.2713
162.2713
162.2713
162.2713
170.3348
184.3614
198.3880
212.4146
226.4412
b
Boiling
Temp.
101.325
kPa
437.39
437.47
438.41
438.94
440.04
440.76
468.99
473.59
476.04
468.93
480.47
488.92
490.57
498.89
489.44
508.61
526.70
543.78
560.12
GPA 2145
c
Triple
Point
Temp.
b
Vapor Pressure
15 °C
K
186.74
174.73
198.84
188.49
222.87
194.94
247.54
254.90
206.76
209.70
263.60
267.80
279.02
283.10
291.33
kPa
0.1623
0.1296
0.1826
0.1039
0.09950
0.1330
0.04178
0.04928
0.02208
0.02601
0.01656
0.00903
0.00984
0.00632
0.00750
0.00231
0.00070
0.00023
0.00006
40 °C
0.8156
0.6947
0.8810
0.5926
0.5620
0.6847
0.2443
0.2618
0.1406
0.1696
0.1088
0.06610
0.06971
0.04720
0.05795
0.02080
0.00739
0.00281
0.00090
Page 36
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
h
Acentric
Factor
Critical Constants
Temp.
K
611.10
603.90
617.10
596.00
601.60
614.20
671.00
691.00
675.00
638.80
682.00
679.00
685.00
695.00
658.10
675.89
692.49
706.88
722.25
Pressure
kPa
2210.5
2175.1
2207.9
2061.6
2099.2
2166.7
2671.0
2638.7
2578.2
1990.4
2644.1
2321.9
2331.0
2372.5
1817.0
1672.0
1566.0
1443.8
1433.9
Density
3
kg/m
237.05
236.30
244.20
236.72
233.03
236.80
269.47
279.34
266.16
236.79
269.26
260.00
269.72
260.39
226.55
228.14
228.12
226.70
225.60
0.4488
0.5074
0.4096
0.5790
0.5470
0.4536
0.4136
0.3190
0.4428
0.5390
0.4487
0.5058
0.4772
0.4967
0.5742
0.6081
0.6458
0.6837
0.7323
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
b,d
Density of Liquid
Relative
density
API
gravity
Absolute
15 °C, 101.325 kPa
3
kg/m
0.3
340.
300.
0.35817
263.56
357.85
0.50796
147.07
507.50
0.56346
119.63
562.95
0.58478
110.47
584.25
0.62564
94.668
625.08
0.63119
92.68
630.62
0.66452
81.436
663.92
0.68864
73.977
688.02
0.70693
68.661
706.30
0.72262
64.315
721.97
0.73496
61.027
734.30
0.56815
117.55
567.64
0.52346
138.82
522.99
0.82195
40.652
821.2
0.8001
45.353
799.4
0.80680
43.884
806.1
1.1422
-7.62
1141.2
0.12478
1002.5
124.67
1.00000
10.000
999.102
0.070912
1863.9
70.848
0.79393
46.727
793.21
0.86177
32.697
861.00
1.0195
7.2935
1018.6
1.3379
-25.737
1336.7
0.61805
97.446
617.50
1.3966
-30.183
1395.3
0.79640
46.175
795.68
0.79440
46.622
793.69
0.42521
201.28
424.82
0.59604
105.90
595.50
0.62818
93.754
627.61
0.62732
94.063
626.76
0.65998
82.900
659.39
0.60126
103.84
600.72
(15 °C/15
°C)
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
2-methylpropene
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
15 °C, sat
1/K
-0.01277
-0.00299
-0.00217
-0.00194
-0.00160
-0.00154
-0.00137
-0.00122
-0.00114
-0.00109
-0.00106
-0.00321
-0.01392
-0.00306
-0.00015
-0.00661
-0.00237
-0.00196
-0.00118
-0.00107
-0.00260
-0.00203
f
Density of Ideal Gas
Relative
density
Volume
Density
15 °C, 101.325 kPa
3
3
m /kg
kg/m
0.5539
1.4739
0.67848
1.0382
0.7864
1.2717
1.5225
0.5362
1.8649
2.0068
0.4068
2.4581
2.0068
0.4068
2.4581
2.4911
0.3277
3.0514
2.4911
0.3277
3.0514
2.9754
0.2744
3.6446
3.4597
0.2360
4.2378
3.9440
0.2070
4.8310
4.4283
0.1844
5.4242
4.9126
0.1662
6.0174
0.9686
0.8429
1.1864
1.4529
0.5619
1.7797
1.5195
0.5373
1.8613
1.1767
0.6938
1.4414
0.9672
0.8441
1.1848
1.1048
0.7389
1.3533
0.13820
5.9074
0.16928
0.62202
1.3125
0.76191
0.0696
11.7293
0.0853
0.9671
0.8442
1.1846
1.2589
0.6485
1.5420
2.0742
0.3936
2.5407
2.4482
0.3335
2.9988
0.5880
1.3884
0.7203
2.2120
0.3691
2.7094
1.1063
0.7379
1.3551
1.5906
0.5133
1.9484
0.8990
0.9081
1.1012
1.3833
0.5902
1.6944
1.3833
0.5902
1.6944
1.8676
0.4371
2.2876
1.8676
0.4371
2.2876
1.9372
0.4214
2.3729
Page 37
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Ratio,
ideal
gas/liquid
Liquid
15 °C, 101.325 kPa
3
cm /mol
53.475
442.17
84.027
281.40
86.888
272.13
103.25
229.02
99.482
237.68
115.42
204.85
114.41
206.67
129.8
182.17
145.64
162.35
161.73
146.20
177.65
133.10
193.77
122.03
49.42
478.4
80.46
293.9
53.59
441.2
42.63
554.6
34.753
680.4
28.040
843.3
32.106
736.47
18.031
1311.3
28.45
831.0
35.31
669.6
42.35
558.4
58.98
400.9
53.05
445.7
27.58
857.3
45.91
515.0
40.27
587.2
58.04
407.4
61.29
385.8
67.28
351.5
63.84
370.4
86.30
274.0
82.03
288.2
93.40
253.2
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
b,d
Density of Liquid
Relative
density
API
gravity
Absolute
15 °C, 101.325 kPa
3
kg/m
0.60106
103.92
600.52
0.61089
100.13
610.35
0.62775
93.908
627.18
0.68554
74.907
684.93
0.63471
91.436
634.14
0.64685
87.252
646.27
0.65632
84.096
655.73
0.65363
84.983
653.05
0.65991
82.923
659.32
0.66480
81.346
664.21
0.75095
56.928
750.28
0.59585
105.98
595.31
0.88495
28.396
884.16
0.75413
56.133
753.45
0.78407
48.969
783.37
0.65450
84.696
653.91
0.66642
80.829
665.82
0.65831
83.444
657.72
0.66959
79.823
668.99
0.87232
30.711
871.53
0.75965
54.770
758.97
0.75393
56.183
753.25
0.74995
57.179
749.28
0.75650
55.546
755.83
0.77772
50.442
777.02
0.77444
51.213
773.75
0.77143
51.926
770.74
0.81628
41.847
815.54
0.67877
76.965
678.16
0.67768
77.301
677.07
0.69495
72.112
694.32
0.69874
71.007
698.11
0.69982
70.695
699.19
0.68370
75.462
683.09
0.69187
73.018
691.25
(15 °C/15
°C)
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Compound
1-butene
(E)-2-butene
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
3-methylhexane
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
15 °C, sat
1/K
-0.00204
-0.00192
-0.00186
-0.00130
-0.00182
-0.00118
-0.00124
-0.00120
-0.00139
-0.00131
-0.00138
-0.00135
-0.00107
-0.00115
-0.00115
-0.00126
-0.00117
-0.00115
-0.00112
-0.00112
-0.00097
-0.00126
-0.00130
-0.00122
-0.00104
-0.00119
-0.00126
-0.00124
f
Density of Ideal Gas
Relative
density
Volume
Density
15 °C, 101.325 kPa
3
3
m /kg
kg/m
1.9372
0.4214
2.3729
1.9372
0.4214
2.3729
1.9372
0.4214
2.3729
2.3519
0.3471
2.8808
2.4215
0.3371
2.9661
2.4215
0.3371
2.9661
2.4215
0.3371
2.9661
2.4215
0.3371
2.9661
2.4215
0.3371
2.9661
2.4215
0.3371
2.9661
2.4215
0.3371
2.9661
2.4911
0.3277
3.0514
2.6970
0.3027
3.3035
2.9058
0.2810
3.5593
2.9058
0.2810
3.5593
2.9754
0.2744
3.6446
2.9754
0.2744
3.6446
2.9754
0.2744
3.6446
2.9754
0.2744
3.6446
3.1813
0.2566
3.8968
3.3901
0.2408
4.1525
3.3901
0.2408
4.1525
3.3901
0.2408
4.1525
3.3901
0.2408
4.1525
3.3901
0.2408
4.1525
3.3901
0.2408
4.1525
3.3901
0.2408
4.1525
3.3901
0.2408
4.1525
3.4597
0.2360
4.2378
3.4597
0.2360
4.2378
3.4597
0.2360
4.2378
3.4597
0.2360
4.2378
3.4597
0.2360
4.2378
3.4597
0.2360
4.2378
3.4597
0.2360
4.2378
Page 38
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Ratio,
ideal
gas/liquid
Liquid
15 °C, 101.325 kPa
3
cm /mol
93.43
253.1
91.93
257.2
89.46
264.3
99.45
237.8
110.6
213.8
108.5
217.9
107.0
221.1
107.4
220.2
106.4
222.3
105.6
223.9
93.48
253.0
121.2
195.1
88.35
267.6
111.7
211.7
107.4
220.1
131.8
179.4
129.4
182.7
131.0
180.5
128.8
183.6
105.7
223.7
129.4
182.8
130.3
181.4
131.0
180.4
129.9
182.0
126.4
187.1
126.9
186.3
127.4
185.6
120.4
196.4
147.8
160.0
148.0
159.8
144.3
163.8
143.5
164.7
143.3
165.0
146.7
161.2
145.0
163.1
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
b,d
Density of Liquid
Relative
density
API
gravity
Absolute
15 °C, 101.325 kPa
3
kg/m
0.70353
69.629
702.90
0.91176
23.694
910.94
0.87203
30.765
871.25
0.86617
31.863
865.40
0.86926
31.282
868.48
0.88523
28.345
884.43
0.75323
56.358
752.55
0.75221
56.612
751.54
0.75869
55.006
758.01
0.77696
50.620
776.27
0.76834
52.663
767.65
0.77500
51.081
774.31
0.76760
52.841
766.91
0.78566
48.603
784.96
0.78830
48.000
787.60
0.76693
53.002
766.24
0.77722
50.559
776.52
0.77411
51.291
773.41
0.78572
48.590
785.01
0.78315
49.181
782.45
0.78763
48.153
786.93
0.77145
51.921
770.76
0.78112
49.650
780.42
0.78998
47.618
789.27
0.80129
45.090
800.57
0.78100
49.678
780.30
0.79302
46.932
792.30
0.84112
36.728
840.37
0.69674
71.589
696.12
0.70013
70.605
699.50
0.69872
71.013
698.10
0.70410
69.466
703.47
0.72030
64.946
719.66
0.71433
66.588
713.68
0.72337
64.112
722.72
(15 °C/15
°C)
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
Compound
3-ethylpentane
styrene
ethylbenzene
p-xylene
m-xylene
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
2,3,4-trimethylpentane
e
Temp.
coef. of
density
15 °C, sat
1/K
-0.00124
-0.00100
-0.00100
-0.00098
-0.00095
-0.00115
-0.00113
-0.00113
-0.00106
-0.00110
-0.00112
-0.00110
-0.00103
-0.00106
-0.00110
-0.00112
-0.00108
-0.00106
-0.00104
-0.00104
-0.00106
-0.00101
-0.00101
-0.00101
-0.00104
-0.00103
-0.00095
-0.00118
-0.00119
-0.00119
-0.00113
-0.00108
-0.00112
-0.00108
f
Density of Ideal Gas
Relative
density
Volume
Density
15 °C, 101.325 kPa
3
3
m /kg
kg/m
3.4597
0.2360
4.2378
3.5960
0.2270
4.4047
3.6656
0.2227
4.4900
3.6656
0.2227
4.4900
3.6656
0.2227
4.4900
3.6656
0.2227
4.4900
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.8744
0.2107
4.7458
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Page 39
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Ratio,
ideal
gas/liquid
Liquid
15 °C, 101.325 kPa
3
cm /mol
142.6
165.9
114.3
206.8
121.9
194.0
122.7
192.7
122.2
193.4
120.0
197.0
149.1
158.6
149.3
158.4
148.0
159.7
144.6
163.6
146.2
161.8
144.9
163.2
146.3
161.6
143.0
165.4
142.5
166.0
146.4
161.5
144.5
163.6
145.1
163.0
142.9
165.4
143.4
164.9
142.6
165.8
145.6
162.4
143.8
164.4
142.2
166.3
140.2
168.7
143.8
164.4
141.6
166.9
133.5
177.1
164.1
144.1
163.3
144.8
163.6
144.5
162.4
145.6
158.7
149.0
160.1
147.7
158.1
149.6
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
b,d
Density of Liquid
Relative
density
API
gravity
Absolute
15 °C, 101.325 kPa
3
kg/m
0.71725
65.781
716.61
0.70234
69.969
701.71
0.70925
68.007
708.61
0.72356
64.061
722.91
0.71785
65.616
717.21
0.71026
67.723
709.62
0.86710
31.688
866.32
0.86692
31.722
866.15
0.86937
31.262
868.59
0.86635
31.829
865.58
0.86990
31.162
869.12
0.88576
28.250
884.96
0.88069
29.169
879.90
0.89907
25.885
898.26
0.77609
50.824
775.39
0.78338
49.128
782.68
0.77476
51.137
774.07
0.78382
49.026
783.11
0.77879
50.192
778.10
0.79168
47.234
790.97
0.79172
47.225
791.01
0.79034
47.537
789.63
0.79594
46.277
795.23
0.80321
44.668
802.49
0.78517
48.716
784.47
0.80722
43.793
806.50
0.80773
43.682
807.01
0.80666
43.915
805.93
0.78911
47.816
788.40
0.79849
45.709
797.78
0.83846
37.262
837.71
0.72407
63.923
723.42
0.71178
67.297
711.14
0.72008
65.006
719.44
0.72827
62.796
727.62
(15 °C/15
°C)
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
Compound
2,3-dimethylhexane
2-methylheptane
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
3-methylheptane
isopropylbenzene
propylbenzene
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
2,4,4-trimethylhexane
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
15 °C, sat
1/K
-0.00110
-0.00117
-0.00115
-0.00110
-0.00112
-0.00113
-0.00099
-0.00095
-0.00099
-0.00099
-0.00097
-0.00094
-0.00090
-0.00088
-0.00097
-0.00097
-0.00103
-0.00094
-0.00101
-0.00101
-0.00103
-0.00095
-0.00101
-0.00092
-0.00103
-0.00099
-0.00099
-0.00095
-0.00101
-0.00098
-0.00090
-0.00108
-0.00113
-0.00106
-0.00106
f
Density of Ideal Gas
Relative
density
Volume
Density
15 °C, 101.325 kPa
3
3
m /kg
kg/m
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
3.9440
0.2070
4.8310
4.1499
0.1967
5.0832
4.1499
0.1967
5.0832
4.1499
0.1967
5.0832
4.1499
0.1967
5.0832
4.1499
0.1967
5.0832
4.1499
0.1967
5.0832
4.1499
0.1967
5.0832
4.1499
0.1967
5.0832
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.3587
0.1873
5.3390
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
Page 40
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Ratio,
ideal
gas/liquid
Liquid
15 °C, 101.325 kPa
3
cm /mol
159.4
148.3
162.8
145.3
161.2
146.7
158.0
149.6
159.3
148.5
161.0
146.9
138.7
170.4
138.8
170.4
138.4
170.9
138.9
170.3
138.3
171.0
135.8
174.1
136.6
173.1
133.8
176.7
162.8
145.2
161.3
146.6
163.1
145.0
161.2
146.7
162.2
145.7
159.6
148.1
159.6
148.2
159.9
147.9
158.7
148.9
157.3
150.3
160.9
146.9
156.5
151.1
156.4
151.2
156.6
151.0
160.1
147.7
158.2
149.4
150.7
156.9
177.3
133.4
180.4
131.1
178.3
132.6
176.3
134.1
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
b,d
Density of Liquid
Relative
density
API
gravity
Absolute
15 °C, 101.325 kPa
3
kg/m
0.72646
63.280
725.81
0.71935
65.205
718.71
0.71507
66.383
714.43
0.73630
60.677
735.64
0.71462
66.507
713.98
0.72107
64.736
720.43
0.72452
63.802
723.87
0.73055
62.190
729.90
0.73926
59.908
738.59
0.74275
59.008
742.09
0.76099
54.442
760.31
0.73602
60.750
735.36
0.72978
62.394
729.13
0.72657
63.251
725.91
0.71770
65.658
717.05
0.72519
63.621
724.54
1.0304
5.8253
1029.5
0.87135
30.892
870.57
0.85775
33.466
856.98
0.86694
31.718
866.16
0.86567
31.957
864.89
0.86160
32.729
860.83
0.88060
29.186
879.81
0.86862
31.402
867.85
0.86601
31.893
865.24
0.86496
32.091
864.19
0.86315
32.434
862.37
0.88472
28.438
883.93
0.86664
31.774
865.87
0.87864
29.544
877.85
0.88212
28.909
881.33
0.87885
29.506
878.06
0.89519
26.567
894.39
0.89670
26.301
895.90
0.89112
27.289
890.32
(15 °C/15
°C)
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
Compound
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
1,2,4,5-tetramethylbenzene
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
15 °C, sat
1/K
-0.00110
-0.00104
-0.00108
-0.00108
-0.00106
-0.00106
-0.00108
-0.00112
-0.00104
-0.00097
-0.00101
-0.00106
-0.00106
-0.00108
-0.00106
-0.00095
-0.00094
-0.00085
-0.00092
-0.00094
-0.00090
-0.00094
-0.00092
-0.00094
-0.00094
-0.00090
-0.00101
-0.00088
-0.00103
-0.00092
-0.00090
-0.00090
-0.00101
f
Density of Ideal Gas
Relative
density
Volume
Density
15 °C, 101.325 kPa
3
3
m /kg
kg/m
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4283
0.1844
5.4242
4.4254
0.1845
5.4207
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
Page 41
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Ratio,
ideal
gas/liquid
Liquid
15 °C, 101.325 kPa
3
cm /mol
176.7
133.8
178.5
132.5
179.5
131.7
174.3
135.6
179.6
131.6
178.0
132.8
177.2
133.5
175.7
134.6
173.6
136.2
172.8
136.8
168.7
140.2
174.4
135.6
175.9
134.4
176.7
133.8
178.9
132.2
177.0
133.6
124.5
189.9
154.2
153.4
156.6
151.0
155.0
152.6
155.2
152.4
155.9
151.6
152.6
155.0
154.7
152.9
155.1
152.4
155.3
152.2
155.6
151.9
151.8
155.7
155.0
152.5
152.9
154.6
152.3
155.3
152.9
154.7
150.1
157.6
149.8
157.8
150.8
156.8
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
b,d
Density of Liquid
Relative
density
API
gravity
Absolute
15 °C, 101.325 kPa
3
kg/m
0.89487
26.624
894.07
0.90953
24.075
908.71
0.81713
41.667
816.39
0.80367
44.567
802.94
0.86351
32.366
862.73
0.79994
45.388
799.22
0.72919
62.551
728.54
0.74007
59.698
739.41
0.74322
58.888
742.55
0.74252
59.067
741.85
0.73651
60.622
735.85
0.76245
54.086
761.77
0.73652
60.620
735.86
0.73089
62.100
730.23
0.73752
60.359
736.86
0.86429
32.218
863.51
0.89423
26.737
893.43
0.86386
32.300
863.08
0.74479
58.486
744.12
0.86980
31.181
869.02
0.86686
31.733
866.08
0.88300
28.749
882.21
0.86361
32.347
862.84
0.75383
56.208
753.15
0.76063
54.530
759.95
0.76741
52.886
766.72
0.77248
51.676
771.79
0.77766
50.456
776.96
(15 °C/15
°C)
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
n-undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
n-dodecane
n-tridecane
n-tetradecane
n-pentadecane
n-hexadecane
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
e
Temp.
coef. of
density
15 °C, sat
1/K
-0.00085
-0.00088
-0.00095
-0.00097
-0.00092
-0.00097
-0.00101
-0.00110
-0.00101
-0.00103
-0.00103
-0.00103
-0.00115
-0.00103
-0.00103
-0.00092
-0.00090
-0.00090
-0.00103
-0.00094
-0.00095
-0.00094
-0.00088
-0.00099
-0.00094
-0.00095
-0.00090
f
Density of Ideal Gas
Relative
density
Volume
Density
15 °C, 101.325 kPa
3
3
m /kg
kg/m
4.6342
0.1762
5.6764
4.6342
0.1762
5.6764
4.8430
0.1686
5.9322
4.8430
0.1686
5.9322
4.8430
0.1686
5.9322
4.8430
0.1686
5.9322
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
4.9126
0.1662
6.0175
5.1185
0.1595
6.2696
5.1185
0.1595
6.2696
5.1185
0.1595
6.2696
5.3969
0.1513
6.6107
5.6028
0.1457
6.8629
5.6028
0.1457
6.8629
5.6028
0.1457
6.8629
5.6028
0.1457
6.8629
5.8812
0.1388
7.2039
6.3655
0.1283
7.7971
6.8498
0.1192
8.3903
7.3341
0.1113
8.9836
7.8184
0.1044
9.5768
Page 42
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,g
Volume
Ratio,
ideal
gas/liquid
Liquid
15 °C, 101.325 kPa
3
cm /mol
150.1
157.5
147.7
160.1
171.8
137.6
174.7
135.4
162.6
145.4
175.5
134.7
195.3
121.1
192.4
122.9
191.6
123.4
191.8
123.3
193.4
122.3
186.8
126.6
193.4
122.3
194.8
121.4
193.1
122.5
171.7
137.7
165.9
142.5
171.8
137.7
210.1
112.6
186.7
126.6
187.4
126.2
183.9
128.5
188.1
125.7
226.2
104.5
242.6
97.47
258.7
91.38
275.2
85.91
291.4
81.13
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=101.325
kPa
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
2-methylpropene
15 °C
0.5
1/kPa
0.00442
0.04453
0.00910
0.0916
0.0132
0.1333
0.0168
0.1695
0.0179
0.1807
0.0220
0.2214
0.0232
0.2330
0.0296
0.2984
0.0364
0.3660
0.0431
0.4343
0.0500
0.5028
0.0595
0.5991
0.0079
0.0798
0.0125
0.1258
0.00745
0.0750
0.00913
0.0920
0.00170
0.01712
0.00275
0.02764
0.02495
0.2511
0.00216
0.0081
0.0111
0.0127
0.0109
0.0138
0.0293
0.0289
0.0083
0.0123
0.0135
0.0174
0.0171
0.0174
0.0217
0.0814
0.1114
0.1282
0.1093
0.1388
0.2950
0.2910
0.0836
0.1236
0.1363
0.1749
0.1718
0.1750
Compressibility
Factor
15 °C
-
Fuel as Liquid
MJ/kg
MJ/m
3
0.5834
0.8514
0.9198
0.9394
0.9682
0.9744
0.9886
0.9952
0.9981
0.9992
0.9997
51.604
49.990
49.038
49.166
48.593
48.668
48.342
48.103
47.919
47.784
47.671
18467.
25370.
27606.
28725.
30375.
30691.
32095.
33096.
33845.
34498.
35004.
0.8362
0.5814
0.8475
48.557
25395.
16.031
12815.
0.9989
0.6618
0.8618
0.8965
0.9043
0.9433
0.9805
0.9964
0.9058
0.9100
0.9392
0.9664
0.9276
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
b,d,i
Net Heating Value
Fuel as Ideal gas
15 °C, ideal reaction
3
MJ/kg
MJ/m
55.575
37.706
51.951
66.066
50.369
93.934
49.388
121.40
49.546
121.79
48.950
149.36
49.045
149.65
48.715
177.55
48.474
205.42
48.290
233.29
48.152
261.19
48.037
289.06
50.337
59.721
48.941
87.097
16.501
23.784
2.4662
141.95
10.100
1.8790
12.102
11.965
Fuel as
Liquid
MJ/kg
Fuel as
Ideal gas
3
45.390
MJ/m
33.95
60.43
86.42
112.0
112.4
138.1
138.4
164.39
190.39
216.38
242.40
268.39
55.96
81.46
14.727
21.905
47.172
45.961
45.216
45.345
44.898
44.974
44.735
44.555
44.418
44.320
44.236
10.223
11.965
9.1089
7.9745
21.257
-5.0074
22.677
29.083
49.973
48.504
9278.2
10660.
13126.
-6986.9
18044.
23083.
21230.
28884.
9.1242
7.9924
22.519
-4.6330
23.878
30.015
49.981
48.522
23.182
23.967
16.220
-12.553
32.358
58.480
55.038
82.215
9.1089
7.9745
17.344
-5.0074
19.904
26.190
48.266
46.286
23.182
23.967
13.401
-12.553
28.599
52.843
53.159
78.457
46.976
47.954
47.779
29443.
31620.
28702.
46.997
47.977
48.160
107.51
109.75
114.28
44.512
45.489
44.611
101.88
104.12
106.76
Page 43
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=101.325
kPa
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
Compound
1-butene
(E)-2-butene
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
3-methylhexane
3-ethylpentane
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
15 °C
0.5
1/kPa
0.0174
0.0182
0.0183
0.0223
0.0213
0.0227
0.0222
0.0229
0.0229
0.0214
0.0219
0.0198
0.0250
0.0240
0.0266
0.0233
0.0256
0.0279
0.0271
0.0333
0.0290
0.0253
0.0325
0.0220
0.0245
0.0267
0.0233
0.0370
0.0330
0.0314
0.0445
0.0293
0.0276
0.0391
0.0426
0.0396
0.1750
0.1837
0.1838
0.2250
0.2147
0.2281
0.2231
0.2310
0.2303
0.2157
0.2204
0.1996
0.2521
0.2416
0.2677
0.2345
0.2580
0.2805
0.2729
0.3356
0.2919
0.2551
0.3269
0.2217
0.2463
0.2687
0.2345
0.3728
0.3320
0.3161
0.4483
0.2950
0.2776
0.3932
0.4285
0.3985
Compressibility
Factor
15 °C
0.9297
0.9404
0.9462
0.9750
0.9616
0.9700
0.9726
0.9760
0.9767
0.9806
0.9863
0.9489
0.9951
0.9933
0.9942
0.9845
0.9865
0.9855
0.9879
0.9975
0.9947
0.9964
0.9944
0.9974
0.9977
0.9973
0.9983
0.9977
0.9904
0.9919
0.9829
0.9941
0.9957
0.9918
0.9910
0.9926
GPA 2145
b,d,i
Gross Heating Value
Fuel as Liquid
3
b,d,i
Net Heating Value
Fuel as Ideal gas
15 °C, ideal reaction
3
MJ/kg
MJ/m
48.456
114.98
48.270
114.54
48.336
114.69
46.782
134.77
MJ/kg
48.075
47.869
47.924
46.755
MJ/m
28870.
29217.
30057.
32023.
48.136
31109.
48.162
46.955
48.435
41.843
47.169
46.607
48.487
48.576
48.274
48.628
42.449
46.646
46.686
46.665
46.653
46.713
46.856
47.138
46.799
47.883
47.938
47.918
47.924
47.961
47.985
48.015
48.031
35229.
28834.
36996.
35540.
36510.
31706.
32343.
31750.
32532.
36996.
35403.
35166.
34965.
35262.
36297.
36254.
36331.
38166.
32473.
32457.
33271.
33457.
33534.
32778.
33191.
33761.
47.370
48.753
42.284
47.202
47.006
48.515
48.606
48.629
48.659
42.868
46.680
46.720
46.700
46.689
46.749
46.891
47.175
46.838
47.916
47.971
47.951
47.958
47.996
48.020
48.051
48.066
Page 44
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
Fuel as
Liquid
Fuel as
Ideal gas
3
MJ/kg
44.907
44.702
44.757
44.146
MJ/m
107.46
107.02
107.18
127.25
142.85
44.969
133.46
140.50
148.76
139.69
168.01
167.31
176.82
177.15
177.23
177.34
167.05
193.84
194.01
193.92
193.88
194.13
194.72
195.90
194.49
203.06
203.29
203.21
203.24
203.40
203.50
203.63
203.70
43.787
44.741
40.137
44.002
43.439
44.878
44.967
44.665
45.019
40.521
43.478
43.518
43.497
43.486
43.545
43.688
43.970
43.631
44.336
44.391
44.371
44.377
44.413
44.438
44.468
44.483
131.11
137.49
134.05
156.73
156.04
163.66
163.99
164.08
164.19
159.53
180.69
180.85
180.77
180.72
180.97
181.56
182.74
181.34
188.03
188.26
188.17
188.20
188.36
188.47
188.60
188.66
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=101.325
kPa
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
Compound
styrene
ethylbenzene
p-xylene
m-xylene
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
2,3,4-trimethylpentane
2,3-dimethylhexane
2-methylheptane
15 °C
0.5
1/kPa
0.0296
0.0377
0.0410
0.0392
0.0438
0.0246
0.0209
0.0229
0.0228
0.0276
0.0216
0.0231
0.0285
0.0240
0.0206
0.0234
0.0264
0.0232
0.0259
0.0184
0.0379
0.0292
0.0136
0.0186
0.0221
0.0158
0.0442
0.0358
0.0265
0.0313
0.0899
0.0257
0.0179
0.0240
0.0202
0.0169
0.2976
0.3796
0.4125
0.3949
0.4410
0.2472
0.2107
0.2302
0.2295
0.2779
0.2170
0.2326
0.2872
0.2419
0.2079
0.2359
0.2656
0.2332
0.2611
0.1857
0.3817
0.2941
0.1368
0.1869
0.2220
0.1587
0.4447
0.3603
0.2669
0.3154
0.9045
0.2586
0.1800
0.2419
0.2035
0.1697
Compressibility
Factor
15 °C
0.9996
0.9990
0.9989
0.9991
0.9991
0.9981
0.9989
0.9987
0.9989
0.9985
0.9992
0.9990
0.9986
0.9990
0.9993
0.9991
0.9988
0.9992
0.9990
0.9995
0.9980
0.9989
0.9998
0.9996
0.9995
0.9998
0.9992
0.9949
0.9981
0.9977
0.9808
0.9983
0.9993
0.9988
0.9993
0.9996
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Liquid
MJ/kg
42.156
43.015
42.479
42.467
42.902
46.988
46.932
46.932
46.885
46.932
46.931
46.412
46.444
46.471
46.647
46.661
46.655
46.666
46.931
46.471
46.406
46.984
46.691
46.505
46.708
46.896
46.888
47.498
47.749
47.762
47.792
47.793
47.787
47.809
47.829
47.807
3
MJ/m
38402.
37477.
36761.
36882.
37944.
35361.
35271.
35575.
36395.
36027.
36339.
35594.
36457.
36601.
35743.
36233.
36083.
36633.
36721.
36570.
35768.
36668.
36852.
37230.
36446.
37156.
39403.
33064.
33401.
33342.
33620.
34394.
34105.
34552.
34275.
33547.
Fuel as Ideal gas
15 °C, ideal reaction
3
MJ/kg
MJ/m
42.201
185.88
43.419
194.95
42.884
192.55
42.875
192.51
43.316
194.49
47.024
223.17
46.970
222.91
46.970
222.91
46.923
222.68
46.970
222.91
46.970
222.91
46.451
220.44
46.483
220.60
46.510
220.73
46.685
221.56
46.700
221.63
46.693
221.60
46.705
221.65
46.970
222.91
46.511
220.73
46.446
220.42
47.024
223.17
46.732
221.78
46.545
220.89
46.749
221.86
46.937
222.75
46.932
222.73
47.811
230.98
47.787
230.86
47.800
230.92
47.830
231.07
47.831
231.07
47.825
231.04
47.847
231.15
47.868
231.25
47.847
231.15
Page 45
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Liquid
MJ/kg
40.450
40.923
40.387
40.374
40.809
43.820
43.765
43.765
43.717
43.764
43.763
43.245
43.277
43.304
43.479
43.493
43.487
43.498
43.763
43.304
43.239
43.817
43.523
43.337
43.540
43.728
43.720
43.997
44.249
44.261
44.291
44.292
44.286
44.308
44.328
44.306
Fuel as
Ideal gas
3
MJ/m
178.37
185.55
183.15
183.11
185.09
208.13
207.88
207.88
207.65
207.88
207.88
205.41
205.56
205.69
206.53
206.59
206.56
206.62
207.88
205.70
205.39
208.13
206.74
205.86
206.83
207.72
207.70
214.06
213.95
214.01
214.15
214.16
214.13
214.24
214.34
214.24
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=101.325
kPa
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
Compound
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
3-methylheptane
isopropylbenzene
propylbenzene
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
2,4,4-trimethylhexane
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
15 °C
0.5
1/kPa
0.0320
0.0224
0.0189
0.0165
0.0326
0.0333
0.0337
0.0335
0.0343
0.0338
0.0341
0.0340
0.0217
0.0134
0.0177
0.0338
0.0156
0.0340
0.0341
0.0341
0.0344
0.0262
0.0341
0.0347
0.0349
0.0333
0.0344
0.0490
0.0342
0.0206
0.0331
0.0082
0.0314
0.0340
0.0346
0.0346
0.3221
0.2253
0.1906
0.1658
0.3282
0.3349
0.3396
0.3370
0.3448
0.3407
0.3435
0.3420
0.2186
0.1350
0.1785
0.3404
0.1569
0.3422
0.3428
0.3434
0.3458
0.2640
0.3429
0.3494
0.3517
0.3356
0.3459
0.4937
0.3448
0.2079
0.3330
0.0821
0.3160
0.3418
0.3480
0.3487
Compressibility
Factor
15 °C
0.9984
0.9992
0.9994
0.9996
0.9996
0.9997
0.9998
0.9998
0.9998
0.9998
0.9998
0.9999
0.9995
0.9998
0.9998
0.9993
0.9998
0.9993
0.9993
0.9993
0.9994
0.9996
0.9994
0.9995
0.9995
0.9996
0.9997
0.9993
0.9997
0.9993
0.9986
0.9999
0.9990
0.9989
0.9990
0.9990
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Liquid
MJ/kg
47.837
47.835
47.848
47.830
43.347
43.369
43.282
43.272
43.161
43.301
43.172
43.198
46.677
46.767
46.716
46.717
46.718
46.716
46.717
46.716
46.716
46.676
46.994
46.715
46.715
46.763
47.040
46.184
47.174
47.674
47.571
47.654
47.674
47.643
47.989
47.610
3
MJ/m
33897.
34581.
34317.
33941.
37552.
37564.
37594.
37456.
37512.
38319.
37986.
38803.
36193.
36603.
36161.
36584.
36351.
36951.
36953.
36889.
37150.
37457.
36866.
37676.
37699.
37688.
37086.
36845.
39518.
34488.
33830.
34284.
34688.
34580.
34490.
34014.
Fuel as Ideal gas
15 °C, ideal reaction
3
MJ/kg
MJ/m
47.877
231.29
47.875
231.29
47.888
231.35
47.871
231.26
43.393
220.57
43.416
220.69
43.330
220.25
43.321
220.21
43.207
219.63
43.349
220.35
43.221
219.70
43.248
219.84
46.717
249.42
46.808
249.91
46.759
249.65
46.759
249.65
46.759
249.65
46.759
249.65
46.759
249.65
46.759
249.65
46.759
249.65
46.717
249.42
47.038
251.14
46.759
249.65
46.759
249.65
46.808
249.91
47.087
251.39
46.547
248.51
47.218
252.10
47.713
258.81
47.612
258.26
47.694
258.70
47.715
258.82
47.685
258.65
48.032
260.53
47.653
258.48
Page 46
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Liquid
MJ/kg
44.336
44.335
44.347
44.329
41.129
41.151
41.064
41.054
40.943
41.083
40.953
40.980
43.510
43.599
43.549
43.549
43.550
43.548
43.549
43.548
43.548
43.508
43.827
43.548
43.547
43.595
43.872
43.017
44.006
44.209
44.107
44.190
44.210
44.179
44.525
44.145
Fuel as
Ideal gas
3
MJ/m
214.38
214.37
214.44
214.35
209.30
209.42
208.98
208.93
208.36
209.08
208.43
208.56
232.51
232.99
232.74
232.74
232.74
232.74
232.74
232.74
232.74
232.51
234.22
232.74
232.74
232.99
234.48
231.60
235.18
240.01
239.47
239.91
240.03
239.86
241.74
239.69
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=101.325
kPa
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
Compound
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
15 °C
0.5
1/kPa
0.0173
0.0348
0.0348
0.0349
0.0349
0.0342
0.0344
0.0333
0.0351
0.0352
0.0359
0.0362
0.0355
0.0675
0.0606
0.0354
0.0604
0.0363
0.0369
0.0367
0.0376
0.0389
0.0622
0.0384
0.0375
0.0378
0.0387
0.0378
0.0380
0.0378
0.0381
0.0388
0.1762
0.1605
0.0361
0.0387
0.1743
0.3507
0.3506
0.3517
0.3515
0.3440
0.3459
0.3351
0.3535
0.3538
0.3613
0.3645
0.3574
0.6799
0.6097
0.3559
0.6078
0.3658
0.3717
0.3694
0.3789
0.3915
0.6265
0.3869
0.3775
0.3800
0.3894
0.3806
0.3822
0.3805
0.3836
0.3904
1.7733
1.6151
0.3637
0.3893
Compressibility
Factor
15 °C
0.9997
0.9991
0.9991
0.9991
0.9991
0.9992
0.9991
0.9992
0.9993
0.9993
0.9996
0.9995
0.9994
0.9999
0.9994
0.9998
0.9995
0.9999
0.9999
0.9999
0.9999
0.9998
0.9997
0.9999
0.9999
0.9999
0.9999
0.9999
0.9999
0.9999
0.9999
1.0000
0.9992
0.9994
0.9998
0.9999
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
b,d,i
Gross Heating Value
Fuel as Liquid
MJ/kg
47.653
47.969
47.989
48.009
47.968
47.665
48.002
47.688
48.027
48.007
48.030
48.013
48.034
40.170
43.645
43.657
43.682
43.965
43.965
43.964
44.019
44.012
43.705
44.010
44.019
44.019
44.011
43.540
43.530
43.576
43.572
43.266
43.449
43.496
46.676
46.506
3
MJ/m
35056.
34249.
34572.
34752.
35012.
35205.
35622.
36257.
35317.
35003.
34866.
34428.
34802.
41355.
37996.
37413.
37836.
38024.
37846.
38680.
38202.
38080.
37769.
37953.
38910.
38114.
38635.
38373.
38222.
38974.
39036.
38521.
38846.
39525.
38106.
37342.
Fuel as Ideal gas
15 °C, ideal reaction
3
MJ/kg
MJ/m
47.695
258.71
48.012
260.43
48.032
260.53
48.052
260.64
48.011
260.42
47.708
258.78
48.044
260.60
47.730
258.90
48.071
260.75
48.052
260.64
48.079
260.79
48.060
260.69
48.079
260.79
40.225
218.05
43.693
248.02
43.706
248.09
43.731
248.24
44.014
249.84
44.014
249.84
44.014
249.84
44.071
250.17
44.061
250.11
43.756
248.38
44.061
250.11
44.071
250.17
44.071
250.17
44.061
250.11
43.594
247.46
43.585
247.41
43.629
247.65
43.626
247.64
43.320
245.90
43.502
246.94
43.549
247.20
46.724
277.18
46.557
276.18
Page 47
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Liquid
MJ/kg
44.189
44.504
44.524
44.544
44.504
44.201
44.538
44.223
44.563
44.543
44.566
44.549
44.570
38.783
41.328
41.339
41.365
41.647
41.647
41.647
41.702
41.694
41.388
41.693
41.702
41.701
41.693
41.223
41.213
41.259
41.255
40.949
41.132
41.179
43.509
43.338
Fuel as
Ideal gas
3
MJ/m
239.92
241.64
241.74
241.85
241.63
239.99
241.81
240.11
241.96
241.85
242.00
241.90
242.00
210.53
234.87
234.94
235.08
236.69
236.69
236.69
237.01
236.96
235.23
236.96
237.01
237.01
236.96
234.30
234.25
234.50
234.49
232.75
233.78
234.05
258.39
257.39
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
p
Summation Factor
2
Z=1-P/P0*b2
Z=1-P*b
P0=101.325
kPa
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
n-undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
n-dodecane
n-tridecane
n-tetradecane
n-pentadecane
n-hexadecane
15 °C
0.5
1/kPa
0.0372
0.0386
0.0382
0.0390
0.0392
0.0397
0.0393
0.0409
0.0407
0.0400
0.0398
0.0401
0.0412
0.0861
0.0413
0.0447
0.0447
0.0454
0.0756
0.0541
0.0584
0.0632
0.0662
Compressibility
Factor
0.3748
15 °C
0.9999
0.3883
0.3842
0.3926
0.3950
0.3994
0.3951
0.4118
0.4094
0.4022
0.4004
0.4034
0.4148
0.8671
0.4159
0.4500
0.4499
0.4573
0.7615
0.5447
0.5877
0.6360
0.6659
0.9996
0.9995
0.9996
0.9998
0.9998
0.9997
0.9998
0.9998
0.9998
0.9999
0.9999
1.0000
0.9998
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
1.0000
b,d,i
Gross Heating Value
Fuel as Liquid
MJ/kg
46.910
46.799
47.824
47.899
47.861
47.895
47.541
47.939
47.916
47.527
47.920
44.339
44.209
44.361
47.575
43.993
44.445
44.446
44.576
47.499
47.731
47.669
47.616
47.165
3
MJ/m
40470.
37403.
34842.
35417.
35539.
35531.
34983.
36519.
35260.
34706.
35310.
38287.
39498.
38287.
35401.
38231.
38493.
39211.
38462.
35774.
36273.
36549.
36749.
36645.
Fuel as Ideal gas
15 °C, ideal reaction
3
MJ/kg
MJ/m
46.962
278.59
46.842
277.88
47.872
288.06
47.945
288.50
47.907
288.28
47.945
288.50
47.591
286.38
47.987
288.76
47.970
288.66
47.578
286.30
47.970
288.66
44.393
278.33
44.260
277.50
44.418
278.48
47.942
316.93
44.050
302.31
44.506
305.44
44.506
305.44
44.638
306.34
47.866
344.82
47.797
372.68
47.740
400.56
47.691
428.43
47.244
452.44
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Page 48
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
b,d,i
Net Heating Value
Fuel as
Liquid
MJ/kg
43.742
43.632
44.389
44.464
44.426
44.460
44.106
44.504
44.481
44.092
44.485
41.941
41.812
41.963
44.164
41.528
41.981
41.982
42.112
44.108
44.357
44.310
44.269
43.829
Fuel as
Ideal gas
3
MJ/m
259.79
259.08
267.39
267.83
267.61
267.83
265.71
268.09
267.99
265.63
267.99
263.30
262.46
263.45
294.38
285.40
288.52
288.52
289.43
320.39
346.37
372.37
398.37
420.50
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Compound
methane
ethane
propane
isobutane
n-butane
isopentane
n-pentane
n-hexane
n-heptane
n-octane
n-nonane
n-decane
ethylene
propylene
carbon dioxide
hydrogen sulfide
nitrogen
oxygen
helium
water
hydrogen
carbon monoxide
hydrogen chloride
carbonyl sulfide
chlorine
ammonia
sulfur dioxide
methanol
ethanol
ethyne
1,2-propadiene
1-propyne
1,3-butadiene
1,2-butadiene
j
Volume of Air
Required to Burn
One Vol. of Ideal
Gas
9.552
16.715
23.879
31.043
31.043
38.206
38.206
45.370
52.534
59.697
66.861
74.025
14.327
21.491
7.164
2.388
2.388
7.164
3.582
7.164
14.327
11.939
19.103
19.103
26.267
26.267
b,k
Heat of
Vaporization
101.325
kPa
kJ/kg
510.8
489.4
425.6
365.1
385.7
343.3
357.6
334.9
316.9
302.2
288.6
276.4
482.4
439.0
573.3
546.4
199.2
213.1
20.564
2256.5
448.7
214.7
443.5
308.9
282.6
1369.
389.1
1101.
849.6
509.6
414.3
442.8
b,m
Specific Heat
Cp, ideal
gas
Cv, ideal
gas
2.2036
1.7054
1.6191
1.6162
1.6511
1.6003
1.6216
1.6125
1.6057
1.6008
1.5967
1.5938
1.4941
1.4937
0.8334
0.9976
1.0395
0.9166
5.1932
1.8620
14.2647
1.0400
0.7989
0.6827
0.4764
2.0792
0.6167
1.3547
1.3824
1.6601
1.4407
1.4824
1.4283
1.4364
15 °C
kJ/(kg-K)
1.6853
1.4289
1.4305
1.4731
1.5080
1.4851
1.5064
1.5160
1.5227
1.5280
1.5319
1.5354
1.1977
1.2961
0.6445
0.7536
0.7427
0.6568
3.1159
1.4005
10.1402
0.7432
0.5708
0.5443
0.3591
1.5910
0.4869
1.0952
1.2019
1.3408
1.2331
1.2749
1.2745
1.2827
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cσ, sat.
liquid
4.0050
2.5840
2.3586
2.3805
2.2208
2.2698
2.2104
2.2038
2.1918
2.1719
2.1562
2.5227
2.8376
2.1277
4.1888
2.1933
1.3058
0.9724
4.6819
1.3792
2.4761
2.3590
5.2962
2.5345
2.2112
2.2331
2.2561
n
Refractive
Index, nD
k=Cp/Cv
1.3075
1.1935
1.1318
1.0971
1.0949
1.0776
1.0765
1.0636
1.0545
1.0476
1.0423
1.0381
1.2475
1.1525
1.2931
1.3237
1.3996
1.3956
1.6667
1.3295
1.4067
1.3994
1.3995
1.2543
1.3265
1.3069
1.2665
1.2369
1.1502
1.2382
1.1683
1.1628
1.1206
1.1198
15 °C
1.00042
1.00072
1.00103
1.00123
1.00133
1.35669
1.36010
1.37698
1.39024
1.39987
1.40742
1.41409
1.31657
1.22994
4
Flammability
Limits
Lower
Upper
310.93 K,
101.325 kPa
(volume % in air)
5.0
15.0
2.9
13.0
2.0
9.5
1.8
8.5
1.5
9.0
1.3
8.0
1.4
8.3
1.1
7.7
1.0
7.0
0.8
6.5
0.7
5.6
0.7
5.4
2.9
32.0
2.1
11.1
4.3
45.5
4
12.5
74.2
74.2
15.5
27
5.5
3.28
1.5
44
19
100
2
1.62
12.5
10.3
5,o
Octane Number
Motor
Method
D-357
-
Research
Method
D-908
-
+0.05
97.1
97.6
89.6
90.3
62.6
26
+1.6
+1.8
+0.1
93.8
92.3
61.7
24.8
75.6
84.9
+0.03
+0.2
1.33424
1.36272
1.33060
1.36351
1.37842
1.34762
1.40267
Page 49
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Compound
2-methylpropene
1-butene
(E)-2-butene
(Z)-2-butene
2-methyl-1,3-butadiene
3-methyl-1-butene
1-pentene
2-methyl-1-butene
(E)-2-pentene
(Z)-2-pentene
2-methyl-2-butene
cyclopentane
2,2-dimethylpropane
benzene
methylcyclopentane
cyclohexane
2,2-dimethylbutane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
toluene
1,1-dimethylcyclopentane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
trans-1,2-dimethylcyclopentane
cis-1,2-dimethylcyclopentane
methylcyclohexane
ethylcyclopentane
cycloheptane
2,2-dimethylpentane
2,4-dimethylpentane
2,2,3-trimethylbutane
3,3-dimethylpentane
2,3-dimethylpentane
2-methylhexane
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
j
Volume of Air
Required to Burn
One Vol. of Ideal
Gas
28.655
28.655
28.655
28.655
33.430
35.818
35.818
35.818
35.818
35.818
35.818
35.818
38.206
35.818
42.982
42.982
45.370
45.370
45.370
45.370
42.982
50.146
50.146
50.146
50.146
50.146
50.146
50.146
50.146
52.534
52.534
52.534
52.534
52.534
52.534
b,k
Heat of
Vaporization
101.325
kPa
kJ/kg
391.6
392.2
405.2
414.2
378.5
342.7
357.6
363.6
371.9
373.0
375.1
389.3
315.7
393.7
345.5
356.4
305.8
315.4
323.1
325.3
360.7
308.3
310.3
309.6
311.4
319.3
318.1
324.0
338.7
290.9
295.8
287.4
295.3
303.1
306.0
b,m
Specific Heat
Cp, ideal
gas
1.5438
1.4780
1.5222
1.4019
1.4675
1.5921
1.5019
1.5280
1.5143
1.3697
1.4582
1.1419
1.6239
1.0029
1.2542
1.2106
1.5931
1.5659
1.6021
1.5774
1.0872
1.3135
1.3257
1.3251
1.3262
1.3223
1.3352
1.3177
1.2949
1.6128
1.6515
1.5783
1.6031
1.5515
1.5937
GPA 2145
Cv, ideal
gas
Cσ, sat.
liquid
15 °C
kJ/(kg-K)
1.3957
1.3298
1.3740
1.2538
1.3454
1.4735
1.3834
1.4095
1.3958
1.2512
1.3397
1.0234
1.5086
0.8965
1.1554
1.1118
1.4967
1.4694
1.5056
1.4809
0.9969
1.2288
1.2410
1.2404
1.2415
1.2376
1.2505
1.2331
1.2103
1.5298
1.5685
1.4953
1.5201
1.4685
1.5107
2.3181
2.2523
2.2773
2.1980
2.1702
2.1808
2.1707
2.2029
2.1970
2.1230
2.1397
1.7626
2.2469
1.7075
1.8441
1.8123
2.1529
2.1462
2.1879
2.1701
1.6700
1.8615
1.8633
1.8775
1.8836
1.8830
1.8429
1.8533
1.8005
2.1604
2.1915
2.0867
2.1000
2.1348
2.1817
n
Refractive
Index, nD
k=Cp/Cv
1.1062
1.1114
1.1079
1.1182
1.0907
1.0805
1.0857
1.0841
1.0849
1.0948
1.0885
1.1158
1.0764
1.1187
1.0855
1.0889
1.0645
1.0657
1.0641
1.0652
1.0905
1.0689
1.0682
1.0683
1.0682
1.0684
1.0677
1.0687
1.0700
1.0542
1.0529
1.0555
1.0546
1.0565
1.0549
15 °C
1.35385
1.35426
1.35912
1.36886
1.42517
1.36054
1.39045
1.40921
1.50417
1.41237
1.42899
1.37172
1.37762
1.37434
1.37924
1.49950
1.41612
1.41259
1.41173
1.41437
1.42463
1.42556
1.42227
1.38480
1.38466
1.39199
1.39355
1.39449
1.38766
Page 50
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
4
Flammability
Limits
Lower
Upper
310.93 K,
101.325 kPa
(volume % in air)
1.6
10
1.6
10
1.6
10
1.6
10
1.12
8.5
5,o
Octane Number
Motor
Method
D-357
-
Research
Method
D-908
-
80.8
97.4
83.5
81
100
99.1
1.3
10
77.1
90.9
1.5
1.3
1.2
1
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.1
1.1
1.1
1
1.1
1.1
1
1
1.1
1
8.3
7.5
8
8.4
8.4
7
7
7
7.7
7.1
7.4
7.4
7.4
7.4
7.2
6.7
6.7
6.8
6.8
6.7
7
6.7
6.8
7
84.9
80.2
+2.8
80
77.2
93.4
94.3
73.5
74.3
+0.3
89.3
72.6
73.1
+0.1
85.5
71.1
61.2
40.2
95.6
83.8
+0.1
86.6
88.5
46.4
74.8
67.2
38.8
92.8
83.1
+1.8
80.8
91.1
42.4
91.3
83
91.8
+0.3
73.4
74.5
+5.8
92.3
80.6
79.2
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
Compound
3-methylhexane
3-ethylpentane
styrene
ethylbenzene
p-xylene
m-xylene
o-xylene
1,1,3-trimethylcyclopentane
1,trans-2,cis-4-trimethylcyclopentane
r-1,t-2,c-3-trimethylcyclopentane
1,1,2-trimethylcyclopentane
1,cis-2,trans-4-trimethylcyclopentane
r-1,c-2,t-3-trimethylcyclopentane
trans-1,4-dimethylcyclohexane
1,1-dimethylcyclohexane
trans-1,3-dimethylcyclohexane
trans-1-ethyl-3-methylcyclopentane
cis-1-ethyl-3-methylcyclopentane
trans-1-ethyl-2-methylcyclopentane
1-ethyl-1-methylcyclopentane
1,cis-2,cis-3-trimethylcyclopentane
cis-1,4-dimethylcyclohexane
cis-1,3-dimethylcyclohexane
isopropylcyclopentane
cis-1-ethyl-2-methylcyclopentane
cis-1,2-dimethylcyclohexane
propylcyclopentane
ethylcyclohexane
cyclooctane
2,2,4-trimethylpentane
2,2-dimethylhexane
2,5-dimethylhexane
2,4-dimethylhexane
2,2,3-trimethylpentane
3,3-dimethylhexane
j
Volume of Air
Required to Burn
One Vol. of Ideal
Gas
52.534
52.534
47.758
50.146
50.146
50.146
50.146
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
59.697
59.697
59.697
59.697
59.697
59.697
b,k
Heat of
Vaporization
101.325
kPa
kJ/kg
308.2
309.3
351.7
335.3
336.4
340.1
342.7
278.8
283.9
283.2
286.8
288.9
290.1
289.9
289.6
292.5
291.7
291.8
289.3
295.9
291.9
296.6
293.9
300.1
303.4
300.9
308.2
305.1
322.6
268.1
277.9
280.7
274.8
284.7
284.2
b,m
Specific Heat
Cp, ideal
gas
1.5835
1.6118
1.1157
1.1617
1.1495
1.1421
1.2007
1.3828
1.3796
1.3796
1.3828
1.3796
1.3796
1.3290
1.3656
1.3221
1.3773
1.3773
1.3773
1.3629
1.3796
1.3260
1.3238
1.3658
1.3773
1.3038
1.3792
1.4140
1.2560
1.5698
1.5989
1.5728
1.6314
1.5707
1.6173
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cv, ideal
gas
Cσ, sat.
liquid
15 °C
kJ/(kg-K)
1.5005
1.5288
1.0359
1.0834
1.0712
1.0638
1.1224
1.3087
1.3055
1.3055
1.3087
1.3055
1.3055
1.2549
1.2915
1.2480
1.3032
1.3032
1.3032
1.2888
1.3055
1.2519
1.2497
1.2917
1.3032
1.2297
1.3051
1.3399
1.1819
1.4970
1.5261
1.5000
1.5586
1.4979
1.5445
2.1421
2.1500
1.7129
1.7147
1.6846
1.6802
1.7356
1.8722
1.9052
1.8798
1.8791
1.8953
1.9057
1.8328
1.8219
1.8540
1.8878
1.8861
1.8699
1.8771
1.8997
1.8486
1.8243
1.8657
1.9061
1.8324
1.8858
1.8469
1.8810
2.0472
2.1438
2.1392
2.1880
2.0763
2.1141
n
Refractive
Index, nD
k=Cp/Cv
1.0553
1.0543
1.0771
1.0723
1.0731
1.0736
1.0698
1.0566
1.0568
1.0568
1.0566
1.0568
1.0568
1.0590
1.0574
1.0594
1.0569
1.0569
1.0569
1.0575
1.0568
1.0592
1.0593
1.0574
1.0569
1.0603
1.0568
1.0553
1.0627
1.0486
1.0477
1.0485
1.0467
1.0486
1.0471
15 °C
1.39126
1.39599
1.54923
1.49826
1.49829
1.49960
1.50765
1.41356
1.41297
1.42523
1.42092
1.43149
1.43898
1.42951
1.42103
1.42814
1.42938
1.43827
1.42874
1.43527
1.46031
1.39388
1.39489
1.40530
Page 51
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
4
Flammability
Limits
Lower
Upper
310.93 K,
101.325 kPa
(volume % in air)
1
6.6
1
6.5
1.1
8
1
6.8
1.1
7
1
7
1
7
1.1
7.1
0.9
6.6
0.9
6.6
1
6.9
1
6.9
0.9
6.6
1
6.8
1
6.8
1
6.7
0.9
6.5
0.9
6.5
0.9
6.6
1
6.8
0.9
6.6
1
6.7
1
6.8
0.9
6.7
0.9
6.7
0.9
6.6
0.9
6.6
0.9
6.6
0.8
6.2
1
6
0.9
6.3
0.9
6.3
0.9
6.3
0.9
6.3
0.9
6.2
5,o
Octane Number
Motor
Method
D-357
55.8
69.3
+0.2
97.9
+1.2
+2.8
100
83.5
Research
Method
D-908
52
65
+3
+0.8
+3.4
+4
79.5
89.2
62.2
85.9
64.2
59.8
59.8
68.3
87.3
66.9
57.6
57.6
68.2
71
76.2
67.2
71.7
81.1
78.6
28.1
40.8
58.2
100
77.4
55.7
69.9
99.9
83.4
80.9
31.2
46.5
71
100
72.5
55.5
65.2
+1.2
75.5
87.7
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
Compound
2,3,4-trimethylpentane
2,3-dimethylhexane
2-methylheptane
4-methylheptane
3,4-dimethylhexane
3-ethylhexane
3-methylheptane
isopropylbenzene
propylbenzene
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
o-ethyltoluene
1,2,4-trimethylbenzene
1,2,3-trimethylbenzene
1,1,4-trimethylcyclohexane
1,1,3-trimethylcyclohexane
r-1,c-3,c-5-trimethylcyclohexane
r-1,c-3,t-5-trimethylcyclohexane
trans,trans-1,2,4-trimethylcyclohexane
cis-1,2,trans-1,4-1,2,4-trimethylcyclohexane
r-1,t-2,c-3-trimethylcyclohexane
r-1,t-2,t-4-trimethylcyclohexane
cis-1,2,cis-1,4-1,2,4-trimethylcyclohexane
1,1,2-trimethylcyclohexane
isobutylcyclopentane
cis,cis-1,2,3-trimethylcyclohexane
cis-1,2,trans-1,3-cyclohexane
isopropylcyclohexane
butylcyclopentane
propylcyclohexane
methylcyclooctane
2,2,4,4-tetramethylpentane
2,2,5-trimethylhexane
2,2,4-trimethylhexane
j
Volume of Air
Required to Burn
One Vol. of Ideal
Gas
59.697
59.697
59.697
59.697
59.697
59.697
59.697
57.309
57.309
57.309
57.309
57.309
57.309
57.309
57.309
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
66.861
66.861
66.861
b,k
Heat of
Vaporization
101.325
kPa
kJ/kg
283.5
291.1
295.6
291.5
292.6
295.7
296.7
306.7
313.1
316.8
315.5
322.1
319.9
323.6
330.4
263.2
269.3
276.4
275.0
268.4
278.2
273.7
277.0
278.3
270.6
279.6
279.0
282.3
289.1
294.3
289.8
286.2
253.4
260.7
259.4
b,m
Specific Heat
Cp, ideal
gas
1.6233
1.5591
1.5915
1.5878
1.5420
1.6143
1.5787
1.2843
1.2289
1.1937
1.1957
1.1926
1.2504
1.2088
1.2502
1.3882
1.3882
1.3792
1.3757
1.3854
1.3854
1.3854
1.3854
1.3854
1.3882
1.3928
1.3854
1.3854
1.3731
1.4258
1.4167
1.3419
1.6260
1.5689
1.5778
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Cv, ideal
gas
Cσ, sat.
liquid
15 °C
kJ/(kg-K)
1.5505
1.4863
1.5188
1.5150
1.4692
1.5415
1.5059
1.2151
1.1597
1.1246
1.1266
1.1234
1.1812
1.1396
1.1810
1.3223
1.3223
1.3133
1.3099
1.3195
1.3195
1.3195
1.3195
1.3195
1.3223
1.3269
1.3195
1.3195
1.3073
1.3599
1.3508
1.2760
1.5611
1.5040
1.5129
2.1267
2.1222
2.1661
2.1558
2.0985
2.1950
2.1517
1.7582
1.7547
1.7739
1.7836
1.7080
1.8302
1.7562
1.7716
1.8406
1.8585
1.9042
1.8847
1.8545
1.9112
1.8829
1.9001
1.9052
1.8412
1.8932
1.8974
1.9109
1.8790
1.9036
1.9238
1.8056
2.0313
2.0869
2.0656
n
Refractive
Index, nD
k=Cp/Cv
1.0469
1.0490
1.0479
1.0480
1.0495
1.0472
1.0483
1.0569
1.0596
1.0615
1.0614
1.0616
1.0586
1.0607
1.0586
1.0498
1.0498
1.0502
1.0503
1.0499
1.0499
1.0499
1.0499
1.0499
1.0498
1.0496
1.0499
1.0499
1.0504
1.0484
1.0488
1.0516
1.0415
1.0431
1.0428
15 °C
1.40650
1.40378
1.39762
1.40077
1.40669
1.40425
1.40084
1.49368
1.49435
1.49899
1.49738
1.50165
1.50585
1.50720
1.51587
1.43232
1.43112
1.44311
1.43386
1.43924
1.40921
1.40208
Page 52
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
4
Flammability
Limits
Lower
Upper
310.93 K,
101.325 kPa
(volume % in air)
0.9
6.2
0.9
6.2
1
6.1
0.9
6.1
0.9
6.1
0.9
6.1
0.9
6.1
0.9
6.5
0.8
6
0.9
6.2
0.9
6.2
0.9
6.1
0.9
6.2
0.9
6.4
0.9
6.4
0.8
6.5
0.9
6.5
0.9
6.5
0.9
6.5
0.8
6.5
0.8
6.5
0.9
6.5
0.9
6.5
0.8
6.5
0.8
6.5
0.8
5.9
0.9
6.5
0.9
6.5
0.8
6.2
0.8
6.1
0.8
6.1
0.8
6
0.9
5
0.8
6
0.8
6
5,o
Octane Number
Motor
Method
D-357
95.9
78.9
23
39
81.7
52.4
35
99.3
98.7
100
97
+0.6
92.1
+0.6
+0.1
Research
Method
D-908
+0.2
71.3
20.6
26.7
76.3
33.5
26.8
+2.1
+1.5
+1.8
82.6
56.4
70.1
81.3
59.1
68.5
81
74.3
83.4
72.9
82.6
28.2
81.3
33.4
82.5
61.1
86.2
62.8
14
17.8
+6
+0.2
+1.4
+0.5
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
Compound
2,4,4-trimethylhexane
2,3,5-trimethylhexane
2,4-dimethylheptane
2,2-dimethylheptane
2,2,3-trimethylhexane
2,6-dimethylheptane
2,5-dimethylheptane
3,5-dimethylheptane
3,3-dimethylheptane
2,3,3-trimethylhexane
2,3,4-trimethylhexane
2,2,3,3-tetramethylpentane
3,4-dimethylheptane
2,3-dimethylheptane
4-methyloctane
2-methyloctane
3-methyloctane
naphthalene
tert-butylbenzene
isobutylbenzene
sec-butylbenzene
1-methyl-3-isopropylbenzene
1-methyl-4-isopropylbenzene
1-methyl-2-isopropylbenzene
1,3-diethylbenzene
1-methyl-3-propylbenzene
butylbenzene
1-methyl-4-propylbenzene
1,2-diethylbenzene
1,4-diethylbenzene
1-methyl-2-propylbenzene
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
1,3-dimethyl-2-ethylbenzene
1,2-dimethyl-3-ethylbenzene
j
Volume of Air
Required to Burn
One Vol. of Ideal
Gas
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
66.861
57.309
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
64.473
b,k
Heat of
Vaporization
101.325
kPa
kJ/kg
260.2
263.3
267.1
268.7
265.8
269.8
268.5
269.7
265.6
270.2
266.5
267.5
276.2
277.0
291.1
283.7
277.3
337.5
284.8
289.1
287.4
292.3
291.7
290.0
297.4
279.7
297.9
290.9
297.8
297.9
285.8
300.8
306.2
302.9
306.1
b,m
Specific Heat
Cp, ideal
gas
1.6059
1.5907
1.6287
1.6006
1.5693
1.5845
1.5631
1.6132
1.6146
1.5988
1.6087
1.5979
1.5480
1.5607
1.5798
1.5862
1.5826
0.9908
1.2891
1.2863
1.2863
1.2949
1.2949
1.2949
1.2792
1.3026
1.2557
1.3026
1.3222
1.2747
1.3026
1.3112
1.3112
1.3112
1.3112
GPA 2145
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Cv, ideal
gas
Cσ, sat.
liquid
15 °C
kJ/(kg-K)
1.5411
1.5259
1.5639
1.5357
1.5044
1.5197
1.4983
1.5484
1.5498
1.5339
1.5439
1.5331
1.4832
1.4959
1.5150
1.5214
1.5178
0.9259
1.2272
1.2243
1.2243
1.2330
1.2330
1.2330
1.2173
1.2406
1.1937
1.2406
1.2603
1.2127
1.2406
1.2492
1.2492
1.2492
1.2492
2.0733
2.1034
2.1767
2.1469
2.0852
2.1425
2.1095
2.1614
2.1319
2.1246
2.1059
2.0718
2.1124
2.1300
2.2653
2.2032
2.1508
1.4962
1.7659
1.7724
1.7777
1.8360
1.7383
1.8263
1.8516
1.8267
1.7765
1.8526
1.8894
1.8519
1.8371
1.8991
1.9100
1.8787
1.8897
n
Refractive
Index, nD
k=Cp/Cv
1.0421
1.0425
1.0415
1.0422
1.0431
1.0427
1.0433
1.0419
1.0418
1.0423
1.0420
1.0423
1.0437
1.0433
1.0428
1.0426
1.0427
1.0701
1.0505
1.0506
1.0506
1.0502
1.0502
1.0502
1.0509
1.0499
1.0519
1.0499
1.0492
1.0511
1.0499
1.0496
1.0496
1.0496
1.0496
15 °C
1.40950
1.40397
1.42567
1.49491
1.48888
1.49230
1.49235
1.49776
1.48874
1.50566
1.49704
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4
Flammability
Limits
Lower
Upper
310.93 K,
101.325 kPa
(volume % in air)
0.8
6
0.8
5.9
0.8
5.7
0.8
5.9
0.8
6
0.8
5.7
0.8
5.7
0.8
5.7
0.8
5.8
0.8
5.8
0.8
5.8
0.8
4.9
0.8
5.7
0.7
5.5
0.8
5.7
0.8
5.7
0.8
5.8
0.9
5.9
0.8
5.7
0.8
6
0.8
6.9
0.8
5.6
0.8
5.6
0.8
5.2
0.8
5.9
0.8
5.4
0.8
5.8
0.8
5.4
0.8
5.9
0.8
5.8
0.8
5.5
0.8
6.1
0.8
6.1
0.8
6.1
0.8
5.3
5,o
Octane Number
Motor
Method
D-357
-
60.5
Research
Method
D-908
-
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Notes 
50.3
95
+3.6
+0.8
98
95.7
+3
+1.6
+0.7
97.7
96
97
94.5
+1.4
+0.6
+3
+1.8
+0.4
95.2
92.2
96
+0.6
+0.3
+0.6
91.9
+0.4
PHYSICAL PROPERTIES OF SELECTED HYDROCARBONS
GPA MIDSTREAM STANDARD 2145-16 (SI) becomes effective January 1, 2017
Notes 
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
Compound
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
1,2,3,4-tetramethylbenzene
tert-butylcyclohexane
butylcyclohexane
cyclodecane
isobutylcyclohexane
2,2-dimethyloctane
3,6-dimethyloctane
3,3-dimethyloctane
2,3-dimethyloctane
5-methylnonane
3-ethyloctane
4-methylnonane
2-methylnonane
3-methylnonane
(2-methylbutyl)benzene
1-tert-butyl-2-methylbenzene
pentylbenzene
n-undecane
1-tert-butyl-3,5-dimethylbenzene
1,3,5-triethylbenzene
1,2,4-triethylbenzene
hexylbenzene
n-dodecane
n-tridecane
n-tetradecane
n-pentadecane
n-hexadecane
j
Volume of Air
Required to Burn
One Vol. of Ideal
Gas
64.473
64.473
64.473
71.637
71.637
71.637
71.637
74.025
74.025
74.025
74.025
74.025
74.025
74.025
74.025
74.025
71.637
71.637
71.637
81.188
78.800
78.800
78.800
78.800
88.352
95.516
102.679
109.843
117.007
b,k
Heat of
Vaporization
101.325
kPa
kJ/kg
313.1
315.1
317.6
267.6
276.9
289.8
255.9
251.2
253.9
265.2
274.4
259.6
287.6
278.5
264.7
276.6
264.0
283.7
265.0
264.7
271.8
265.1
269.6
256.2
243.4
248.4
226.6
216.0
b,m
Specific Heat
Cp, ideal
gas
1.3767
1.3512
1.3775
1.3994
1.4481
1.3313
1.3967
1.5943
1.5519
1.6064
1.5585
1.5775
1.6029
1.5818
1.5858
1.5766
1.3168
1.3272
1.2850
1.5926
1.3586
1.3440
1.3626
1.3096
1.5895
1.5883
1.5855
1.5860
1.5859
Cv, ideal
gas
Cσ, sat.
liquid
15 °C
kJ/(kg-K)
1.3148
1.2892
1.3155
1.3401
1.3888
1.2720
1.3374
1.5359
1.4934
1.5479
1.5001
1.5191
1.5445
1.5234
1.5273
1.5182
1.2607
1.2711
1.2289
1.5394
1.3074
1.2928
1.3114
1.2583
1.5407
1.5432
1.5436
1.5468
1.5492
1.9712
1.7727
1.7883
1.8420
1.8914
1.8008
1.8485
2.1407
2.0479
2.1191
2.1239
2.1905
2.1344
2.2551
2.2356
2.1449
1.8537
1.7800
1.8554
2.1832
1.6536
1.8351
1.9163
1.8358
2.1809
2.1835
2.1861
2.1873
2.1926
n
Refractive
Index, nD
k=Cp/Cv
1.0471
1.0481
1.0471
1.0442
1.0427
1.0466
1.0443
1.0380
1.0391
1.0378
1.0390
1.0385
1.0378
1.0384
1.0383
1.0385
1.0445
1.0441
1.0456
1.0346
1.0392
1.0396
1.0391
1.0407
1.0317
1.0292
1.0272
1.0253
1.0237
15 °C
-
1.44903
1.44296
1.44082
1.49167
1.41946
1.50257
1.42384
1.42404
1.43076
1.43476
1.43646
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
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4
Flammability
Limits
Lower
Upper
310.93 K,
101.325 kPa
(volume % in air)
0.7
5.5
0.7
5.6
0.7
5.5
0.7
5.9
0.7
5.7
0.6
5.4
0.7
5.9
0.7
5.5
0.7
5.4
0.7
5.5
0.7
5.4
0.7
5.4
0.7
5.4
0.7
5.4
0.7
5.4
0.7
5.4
0.7
5.1
0.7
5.1
0.7
5.1
0.6
5
0.6
5
0.6
5
0.6
5
0.7
5
0.5
4.8
0.4
4.5
0.5
4.3
0.4
4.1
5,o
Octane Number
Motor
Method
D-357
+0.2
+0.1
Research
Method
D-908
-
+0.5
NOTES FOR GPA MIDSTREAM STANDARD 2145-16
In the tables with fluids listed in rows (as done in TP-17), the first 22 fluids are the standard
compounds given in the first set of tables. These are followed by the non-hydrocarbon
compounds sorted by boiling-point temperature, and then by the hydrocarbons sorted first by
molar mass and then by boiling point temperature.
All temperatures are based on the International Temperature Scale 1990 (ITS-90).
All properties except molar mass, flammability limits, and octane number were calculated from
the REFPROP 9.1 program (reference 2) for the fluids listed below, or from the WTT program
(reference 3). The fluids available in REFPROP include methane, ethane, propane, isobutane,
butane, isopentane, pentane, hexane, heptane, octane, nonane, decane, undecane, dodecane,
ethylene, propylene, carbon dioxide, hydrogen sulfide, nitrogen, oxygen, water, hydrogen,
carbon monoxide, hydrogen chloride, carbonyl sulfide, ammonia, sulfur dioxide, methanol,
ethanol, cyclopentane, benzene, cyclohexane, toluene, ethylbenzene, m-xylene, p-xylene, oxylene, propylcyclohexane, 1-butene, (Z)-2-butene, (E)-2-butene, 2-methylpropene, 2methylpentane, 2,2-dimethylpropane, and 2,2,4-trimethylpentane. The properties of helium were
taken from the equation of state that was finalized after the release of REFPROP 9.1.
Shaded values were estimated by GPA Midstream for the hypothetical liquid state and were not
re-evaluated.
Cells with no entry for the vapor pressure or a property in the liquid phase correspond to fluids
where the referenced temperature is above the critical temperature.
a
The molar masses were calculated from the atomic weights given in Reference 1; these values
(g/mol) are: C = 12.0107, H = 1.00794, N = 14.0067, O = 15.9994, S = 32.065, He = 4.002602,
Ar = 39.948, and Cl = 35.453. All molar masses in the tables are listed with 4 decimal places
without consideration of their uncertainties past the third decimal point.
b
For some compounds, values within this property group are for conditions different from those
given in the heading.
c
The triple point temperature is approximately the same as the melting point for most fluids.
d
For fluids with vapor pressures greater than 14.696 psia (101.325 kPa), the property is that of
the liquid state at saturation pressure. For nitrogen, oxygen, carbon monoxide, helium,
hydrogen, and ethylene, the property is the value of the liquid at the normal boiling
temperature.
e
The temperature coefficient of density, in units of reciprocal temperature, is related to the
expansion coefficient by
1  ∂V 
1  ∂ρ 


 =− 
V  ∂T  p
ρ  ∂T  p
f
The relative density of an ideal gas relative to a reference fluid (formerly that of air) has been
calculated by dividing the molar mass of the gas by 28.9625 g/mol. The gas constant is R =
8.3144621 J mol–1 K–1 [10.7316 psia ft3/(lbmol °R) with 1 Btu = 1055.056 J].
g
Gas states at 60 °F (15 °C in the SI tables)q and liquid states at the normal boiling point. The
specific volume of an ideal gas has been calculated from the ideal gas equation (PV=RT). The
volume ratio is V(ideal gas)/V(saturated liquid).
h
The Pitzer acentric factor is given by ω = –log10 (Psat/Pc) – 1, with Psat at T = 0.7 Tc.
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
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i
The heating value is the negative of the enthalpy of combustion at 60 °F (15 °C in the SI
tables)q and 14.696 psia (101.325 kPa). The basis for gross heating values is these conditions
for a dry gas based on an ideal reaction, see GPA-2172 for conversion to other bases.
Conversion of enthalpies of combustion at T = 298.15 K, given in reference 3, were converted
to the conditions specified here with the property values from reference 2. Heating values for
H2S are based on SO2(g) and H2O as products. For gross heating values, the water formed by
the reaction is liquid; for net heating values, the water formed by the reaction is an ideal gas.
The liquid columns are for combustion of the fuel in the liquid state, the difference being the
heat of vaporization at 60 °F q.
j
Air required for the combustion of an ideal gas for compounds with the formula CnHmOhSjNk is
Vair/Vgas = (n + m/4 – h/2 + j) / 0.20939
Values are based on an oxygen mole fraction of 0.20939 for air (see air section below).
k
The heat of vaporization is the enthalpy of the saturated vapor at a boiling point of 14.696 psia
(101.325 kPa)q minus the enthalpy of the saturated liquid at the same pressure. For carbon
dioxide, the value represents the enthalpy of sublimation.
m
The liquid value is not rigorously Cp, but rather it is Cσ, the heat capacity along the saturation
curve, defined as:
 ∂V  ∂P
Cσ = C p − T 

 ∂T  p ∂T σ
When dealing with liquids far from the critical point (i.e., low temperatures), Cσ ≈ Cp.
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
n
The refractive index reported refers to the liquid or gas, and is measured with light with a
wavelength of 589.26 nm (corresponding to the sodium D-line).
o
Entries with a + sign and number specify the amount (in cm3) of TEL (tetraethyl lead) added
per gallon to achieve the ASTM octane number of 100, corresponding to that of 2,2,4trimethylpentane.
p
The summation factor is given with the symbol b. The dimensional summation factor can be
used to approximate the compressibility factor with the equation Z = 1 – Pb2 with units of
1/psia0.5 or 1/kPa0.5 (which is the format used in the 2009 versions of GPA-2145 and 2172).
The unitless summation factor can be used to approximate the compressibility factor with the
equation Z = 1 – (P/P0)b2 with P0 set to 1 atm (14.696 psia or 101.325 kPa). The unitless
summation is preferred.
q
Vapor properties for tables in FPS units are generally calculated at 60 °F, whereas the
properties in the SI tables are calculated at 15 °C. The two temperatures should not be assumed
identical (60 °F = 15.5555… °C), and thus there will be slight differences between the two
tables for the same properties. The pressures in both tables, however, are calculated at 1 atm
(14.696 psia or 101.325 kPa).
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Thermophysical Properties of Dry Air
The definition of relative density in the main tables was modified so that the values are based
solely on a fixed reference value (28.9625 g/mol), and is no longer based on the molar mass of
air, which changes from time to time as the mole fractions of the components in dry air are
remeasured with lower uncertainties. The main tables now list pure fluids only; all properties for
air were removed from the tables and are included here.
The most recently published molar mass of air is 28.96546 g/mol. The updated publication ISO
6976-16 – 'Natural gas – Calculation of calorific value, density, relative density and Wobbe
index from composition' will also report this value. It is taken from the latest scientific
publication on air from Picard et al. (reference 6). The information in the table below (taken
from Table 1 of Picard et al.) should not be used for relative density calculations.
The properties in the second table were calculated with the REFPROP 9.1 program (reference 2).
Component
Nitrogen
Oxygen
Argon
Carbon dioxide
Neon
Helium
Methane
Krypton
Hydrogen
Nitrous oxide
Carbon monoxide
Xenon
Molar mass of air
(ΣxiM/Σxi)
Molar Mass of Dry Atmospheric Air (g/mol)
Mole Fraction (xi)
Molar Mass (M)
0.780848
28.0134
0.209390
31.9988
0.009332
39.948
0.00040
44.0095
18.2×10−6
20.1797
5.2×10−6
4.0026
1.5×10−6
16.0425
1.1×10−6
83.798
0.5×10−6
2.01588
0.3×10−6
44.0128
0.2×10−6
28.0101
0.1×10−6
131.293
xi·M
21.874207
6.700229
0.372795
0.017604
0.000367
0.000021
0.000024
0.000092
0.000001
0.000013
0.000006
0.000013
28.96546
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Properties of Dry Air
SIa
28.96546 g/mol
78.903 K
59.75 K
132.53 K
3.7860 MPa
342.68 kg/m3
875.21 kg/m3
FPSb
Molar mass
28.96546 lbm/lbmol
Boiling temperaturec
–317.64 °F
Triple point temperature
–352.12 °F
Critical temperature
–221.12 °F
Critical pressure
549.11 psia
Critical density
21.393 lbm/ft3
c
Density of liquid
54.637 lbm/ft3
7.3039 lbm/gal
Volume of liquidc
0.0011426 m3/kg
0.13691 gal/lbm
Density of ideal gas
1.2250 kg/m3
0.07633 lbm/ft3
3
Volume of ideal gas
0.81631 m /kg
13.101 ft3/lbm
Unitless summation factor
0.02066
0.02052
Acentric factor
–0.0067
–0.0067
Cp (ideal gas)
1.0042 kJ/(kg K)
0.2399 Btu/(lbm °F)
Cv (ideal gas)
0.7172 kJ/(kg K)
0.1713 Btu/(lbm °F)
k (=Cp /Cv)
1.4002
1.4002
a
SI values are given at 15 °C and 0.101325 MPa, except those at saturation.
b
FPS values are given at 60 °F and 14.696 psia, except those at saturation.
c
at the normal boiling point for the saturated liquid
GPA 2145 Page 57
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References
2. E.W. Lemmon, M.L. Huber, and M.O. McLinden, NIST Standard Reference Database 23:
Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 9.1, National
Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg,
2013. This database includes The IAPWS Formulation 1995 for the Thermodynamic
Properties of Ordinary Water Substance for General and Scientific Use, J. Phys. Chem. Ref.
Data, 31(2), 387-535, 2002.
3. K. Kroenlein, C.D. Muzny, A.F. Kazakov, V. Diky, R.D. Chirico, J.W. Magee, I.
Abdulagatov, and M. Frenkel, NIST Web Thermo Tables (WTT), Lite Edition, NIST
Standard Reference Subscription Database 202, http://www.nist.gov/srd/nistwebsub2.cfm.
4. Engineering Sciences Data Unit, Fire Hazard Properties: Flash Points, Flammability Limits
and Autoignition Temperatures, ESDU 82030, September, 1983.
5. E.F. Obert, Internal Combustion Engines and Air Pollution, Harper and Row, New York,
1973.
6. A. Picard, R.S. Davis, M. Gläser, and K. Fujii, Revised Formula for the Density of Moist Air
(CIPM-2007), Metrologia, 45:149-155, 2008.
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Page 58
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
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1. M.E. Wieser and M. Berglund, Pure Appl. Chem., 81:2131-2156, 2009.
GPA Midstream Standard 2145
History
(Adoption and Revisions)
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1942 – Adopted as a Standard
1957 – Revised
1962 – Revised
1966 – Revised
1971 – Revised
1975 – Revised
1977 – Revised
1982 – Revised
1983 – Revised
1984 – Revised
1985 – Revised
1986 – Revised
1988 – Revised
1989 – Revised
1990 – Revised
1991 – Revised
1992 – Revised
1993 – Revised
1994 – Revised
1995 – Revised
1996 – Revised
1997 – Reaffirmed; No Changes
1998 – Reaffirmed; No Changes
2000 – Revised
2003 – Revised
2005 – Revised
2007 – Revised
2009 – Revised
2016 – Revised
GPA 2145
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Page 59
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST
--``,```,`,`,`,```,``,`,``,,,,`,-`-`,,`,,`,`,,`---
Copyright Gas Processors Association
Provided by IHS Markit under license with GPA
No reproduction or networking permitted without license from IHS
Licensee=Hargrove Engineers & Constructors/5987557001, User=Paredes, Jaime
Not for Resale, 02/26/2021 14:02:24 MST