Yokogawa 415 Steam and Gas - Manual (Page 77)

APPENDIX
PROPERTIES OF SELECTED GASES
Sp. Gravity Critical Temperature Critical Pressure
G °C °F kPa psia
Acetylene 0.8990 35.17 95.3 6140 890.6
Air 1.0000 -140.4 -220.8 3769 546.7
Ammonia 0.5880 -168.0 -270.4 11277 1637.7
Argon 1.3793 -122.3 -188.2 4873 706.9
Butane 2.0054 153.0 307.4 3648 529.1
Carbon Dioxide 1.5196 31.06 87.9 7376 1069.9
Carbon Monoxide 0.9671 -140.3 -220.5 3496 507.0
Chlorine 2.4482 143.8 290.9 7701 1116.9
Ethane 1.0382 32.28 90.1 4884 708.4
Ethylene 0.9686 9.28 48.7 5036 730.4
Helium 0.1381 -267.9 -450.2 228.99 33.21
Helium-4 0.1382 -267.9 -450.3 226.8 32.9
Hydrogen 0.0696 -239.9 -399.9 1296.9 188.1
Hydrogen Chloride 1.1898 51.44 124.6 8313 1205.7
Hydrogen Sulfide 1.1767 100.1 212.1 8751 1269.2
Methane 0.5539 -82.56 -116.6 4600 667.2
Neon 0.6969 -228.8 -379.8 2756 399.7
Nitrogen 0.9672 -146.9 -232.5 3394 492.3
Nitrous Oxide 1.5199 36.5 97.7 7265 1053.7
Oxygen 1.1048 -118.6 -181.4 5046 731.9
Propane 1.5226 96.67 206.0 4246 615.8
Appendix 75