Chemical	MW	Tc	Pc

Methane	16.04	190.6	45.99
Propane	44.1	369.8	42.48
n-Butane	58.12	425.1	37.96
n-Pentane	72.15	469.7	33.7
n-Hexane	86.18	540.2	27.4
n-Heptane	100.2	540.2	27.4
n-Octane	114.23	568.7	24.9
Ethylene	28.04	282.3	50.4
Propylene	42.08	365.6	46.65
Acetylene	26.04	308.3	61.39
Benzene	78.11	562.2	48.98
Toluene	92.14	591.8	41.06
Acetone	58.08	508.2	47.01
Methanol	32.04	512.6	80.97
Ethanol	46.07	513.9	61.48
HydrogenChloride	36.41	324.7	83.1
Acetic-Acid	60.05	592	57.86
CCl4	153.82	556.4	45.6
Chloroform	119.38	536.4	54.72
Argon	39.95	150.9	48.98
Krypton	83.8	209.4	55.02
Xenon	165.03	289.7	58.4
Hydrogen	2.016	33.19	13.13
Oxygen	32	154.6	50.43
Nitrogen	28	126.2	34
Chlorine	70.9	417.2	77.1
Carbon-Monoxide	28.01	132.9	34.99
Carbon-dioxide	44.01	304.2	73.83
Carbondisulfide	76.14	552	79
Sulfur-dioxide	64.065	430.8	78.84
Nitricoxide(NO)	30.006	180.2	64.8
Ammonia	17.03	405.7	112.8