Hydrocarbon Properties | Engineering Data

Component	MW	Tc(°F)	Pc(psia)	SG	ω
Methane	16.04	-116.6	666.4	0.300	0.011
Ethane	30.07	90.1	706.5	0.356	0.099
Propane	44.10	206.0	615.0	0.507	0.152
i-Butane	58.12	274.9	527.9	0.563	0.181
n-Butane	58.12	305.6	548.8	0.584	0.200
i-Pentane	72.15	369.1	490.4	0.625	0.227
n-Pentane	72.15	385.7	488.6	0.631	0.252
n-Hexane	86.18	453.7	436.9	0.664	0.301
n-Heptane	100.2	512.8	396.8	0.688	0.350
n-Octane	114.2	564.2	360.6	0.707	0.399

Component	MW	Tc(°F)	Pc(psia)	SG	ω
Nitrogen	28.01	-232.5	493.0	0.809	0.037
CO₂	44.01	87.9	1070.6	0.818	0.274
H₂S	34.08	212.7	1306.0	0.784	0.090
Water	18.02	705.4	3206.2	1.000	0.344
Helium	4.00	-450.3	32.9	0.138	-0.390
Hydrogen	2.02	-399.9	187.5	0.071	-0.216
Oxygen	32.00	-181.4	731.4	1.141	0.022
Air	28.96	-221.3	546.7	1.000	0.035

Component	HHV (Btu/scf)	LHV (Btu/scf)	HHV (MJ/m³)	LHV (MJ/m³)
Methane	1010	909	37.7	33.9
Ethane	1770	1619	66.1	60.4
Propane	2520	2315	94.0	86.4
i-Butane	3253	3002	121.3	112.0
n-Butane	3262	3011	121.7	112.4
i-Pentane	4001	3699	149.3	138.0
n-Pentane	4011	3709	149.7	138.4
n-Hexane	4756	4404	177.4	164.3
Hydrogen	325	275	12.1	10.3

Component	A	B	C	Range (°F)
Methane	6.61184	389.93	436.03	-296 to -117
Ethane	6.80266	656.40	433.65	-183 to 90
Propane	6.82973	813.20	432.48	-44 to 206
n-Butane	6.83029	945.90	428.61	31 to 306
n-Pentane	6.85296	1064.84	426.25	97 to 386
n-Hexane	6.87601	1171.17	423.87	156 to 454
Water	8.07131	1730.63	402.57	32 to 212