Page 309 - Valve Selection Handbook

Table B-l (Continued)
PC
c
M R Isentropic T c Critical
Molecular Individual Coefficient Critical Pressure
Gas Mass Gas Constant kfor Temper•ature (absolute)
P -» atm
kg lb J ft. lbf T = 273K
kmol lbmol kg.K lb.°R = 492R °K °R MPa Ib/in 2
Carbon oxysulfide COS 60.077 138.39 25.72 — 375.35 675.6 6.178 895.9
Chlorine C1 2 70.914 117.24 21.79 1.34 417.2 751.0 7.698 1116.3
Cyanogen C 2N 2 52.038 159.77 29.69 — 399.7 719.5 5.894 854.6

Ethane C 2H6 30.070 276.49 51.38 1.20 305.42 549.8 4.884 708.2
Ethylene C 2H 4 28.054 296.36 55.07 1.25 282.4 508.3 5.070 735.2

Helium He 4.003 2076.96 385.95 1.63 5.2 9.4 0.229 33.22
Hydrogen H 2 2.016 4124.11 766.36 1.41 33.3 59.9 1.295 187.7
Hydrogen chloride HC1 36.465 228.01 42.37 1.39 324.7 584.5 8.307 1204.4
Hydrogen cyonide HCN 27.027 307.63 57.16 — 456.7 822.1 5.394 782.1
Hydrogen sulfide H 2S 34.082 243.94 45.33 1.33 373.53 672.4 9.013 1306.8