- Acetylene
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Formula C₂H₂ Molecular Weight (lb/mol) 26.04 Critical Temp. (°F) 96.0 Critical Pressure (psia) 906.0 Boiling Point (°F) –119.6 Melting Point (°F) –113.4 Psat @ 70°F (psia) 586.2 Liquid Density @ 70°F (lb/ft³) 23.61 Gas Density @ 70°F 1 atm (lb/ft³) 0.0677 Specific Volume @ 70°F 1 atm (ft³/lb) 14.76 Specific Gravity 0.920 Specific Heat @ 70°F (Btu/lbmol–°F) 10.53 - Air
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Formula -- Molecular Weight (lb/mol) 28.96 Critical Temp. (°F) N/A Critical Pressure (psia) N/A Boiling Point (°F) –317.8 Melting Point (°F) N/A Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.075 Specific Volume @ 70°F 1 atm (ft³/lb) 13.3 Specific Gravity 1.000 Specific Heat @ 70°F (Btu/lbmol–°F) 6.96 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Ammonia
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Formula NH₃ Molecular Weight (lb/mol) 17.03 Critical Temp. (°F) 270.1 Critical Pressure (psia) 1636.0 Boiling Point (°F) -28.2 Melting Point (°F) –107.9 Psat @ 70°F (psia) 129.0 Liquid Density @ 70°F (lb/ft³) 38.55 Gas Density @ 70°F 1 atm (lb/ft³) 0.0445 Specific Volume @ 70°F 1 atm (ft³/lb) 22.48 Specific Gravity 0.604 Specific Heat @ 70°F (Btu/lbmol–°F) 8.69 - Argon
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Formula Ar Molecular Weight (lb/mol) 39.95 Critical Temp. (°F) –188.4 Critical Pressure (psia) 705.8 Boiling Point (°F) –302.6 Melting Point (°F) –308.8 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.1034 Specific Volume @ 70°F 1 atm (ft³/lb) 9.67 Specific Gravity 1.38 Specific Heat @ 70°F (Btu/lbmol–°F) 4.98 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Arsine
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Formula AsH₃ Molecular Weight (lb/mol) 77.95 Critical Temp. (°F) 211.8 Critical Pressure (psia) 957 Boiling Point (°F) –79.9 Melting Point (°F) –178.5 Psat @ 70°F (psia) 217.9 Liquid Density @ 70°F (lb/ft³) 92.59 Gas  Density @ 70°F 1 atm (lb/ft³) 0.2038 Specific Volume @ 70°F 1 atm (ft³/lb) 4.91 Specific Gravity 2.769 Specific Heat @ 70°F (Btu/lbmol–°F) 9.23
- Boron Trichloride
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Formula BCl₃ Molecular Weight (lb/mol) 117.17 Critical Temp. (°F) 353.8 Critical Pressure (psia) 561.3 Boiling Point (°F) 54.6 Melting Point (°F) –160.6 Psat @ 70°F (psia) 19.9 Liquid Density @ 70°F (lb/ft³) 84.44 Gas Density @ 70°F 1 atm (lb/ft³) 0.3141 Specific Volume @ 70°F 1 atm (ft³/lb) 3.18 Specific Gravity 4.267 Specific Heat @ 70°F (Btu/lbmol–°F) 15.11 - Boron Trifluoride
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Formula BF₃ Molecular Weight (lb/mol) 67.81 Critical Temp. (°F) 10.0 Critical Pressure (psia) 723.0 Boiling Point (°F) –148.5 Melting Point (°F) –199.7 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.1745 Specific Volume @ 70°F 1 atm (ft³/lb) 5.73 Specific Gravity 2.320 Specific Heat @ 70°F (Btu/lbmol–°F) 12.10 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Butane
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Formula C₄H₁₀ Molecular Weight (lb/mol) 58.12 Critical Temp. (°F) 305.9 Critical Pressure (psia) 549.9 Boiling Point (°F) 31.0 Melting Point (°F) —217.0 Psat @ 70°F (psia) 31.3 Liquid Density @ 70°F (lb/ft³) 36.05 Gas Density @ 70°F 1 atm (lb/ft³) 0.1551 Specific Volume @ 70°F 1 atm (ft³/lb) 6.45 Specific Gravity 2.108 Specific Heat @ 70°F (Btu/lbmol—°F) 23.87
- Carbon Dioxide
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Formula CO₂ Molecular Weight (lb/mol) 44.01 Critical Temp. (°F) 87.9 Critical Pressure (psia) 1071.0 Boiling Point (°F) –109.2 Melting Point (°F) –69.9 Psat @ 70°F (psia) 852.8 Liquid Density @ 70°F (lb/ft³) 47.64 Gas Density @ 70°F 1 atm (lb/ft³) 0.1144 Specific Volume @ 70°F 1 atm (ft³/lb) 8.74 Specific Gravity 1.555 Specific Heat @ 70°F (Btu/lbmol–°F) 8.92 - Carbon Monoxide
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Formula CO Molecular Weight (lb/mol) 28.01 Critical Temp. (°F) –220.4 Critical Pressure (psia) 485.6 Boiling Point (°F) –312.7 Melting Point (°F) –337.1 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0725 Specific Volume @ 70°F 1 atm (ft³/lb) 13.80 Specific Gravity 0.985 Specific Heat @ 70°F (Btu/lbmol–°F) 6.97 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Chlorine
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Formula Cl₂ Molecular Weight (lb/mol) 70.91 Critical Temp. (°F) 291.2 Critical Pressure (psia) 1118.4 Boiling Point (°F) –29.3 Melting Point (°F) –149.8 Psat @ 70°F (psia) 98.4 Liquid Density @ 70°F (lb/ft³) 88.83 Gas Density @ 70°F 1 atm (lb/ft³) 0.1858 Specific Volume @ 70°F 1 atm (ft³/lb) 5.38 Specific Gravity 2.524 Specific Heat @ 70°F (Btu/lbmol–°F) 8.16
- Deuterium
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Formula D₂ Molecular Weight (lb/mol) 4.03 Critical Temp. (°F) –390.8 Critical Pressure (psia) 241.5 Boiling Point (°F) –417.0 Melting Point (°F) –426.0 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0104 Specific Volume @ 70°F 1 atm (ft³/lb) 95.97 Specific Gravity 0.142 Specific Heat @ 70°F (Btu/lbmol–°F) 6.95 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Diborane
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Formula B₂H₆ Molecular Weight (lb/mol) 27.67 Critical Temp. (°F) 62.1 Critical Pressure (psia) 580.8 Boiling Point (°F) –135.1 Melting Point (°F) –264.8 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0712 Specific Volume @ 70°F 1 atm (ft³/lb) 14.05 Specific Gravity 0.950 Specific Heat @ 70°F (Btu/lbmol–°F) 13.67 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Dichlorosilane
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Formula SiH₂Cl₂ Molecular Weight (lb/mol) 101.01 Critical Temp. (°F) 348.8 Critical Pressure (psia) 678.2 Boiling Point (°F) 49.9 Melting Point (°F) –187.6 Psat @ 70°F (psia) 24.2 Liquid Density @ 70°F (lb/ft³) 75.19 Gas Density @ 70°F 1 atm (lb/ft³) 0.2602 Specific Volume @ 70°F 1 atm (ft³/lb) 3.84 Specific Gravity 3.470 Specific Heat @ 70°F (Btu/lbmol–°F) 14.74 - Disilane
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Formula Si₂H₆ Molecular Weight (lb/mol) 62.22 Critical Temp. (°F) 303.5 Critical Pressure (psia) 746.9 Boiling Point (°F) 6.3 Melting Point (°F) –206.7 Psat @ 70°F (psia) 49.3 Liquid Density @ 70°F (lb/ft³) N/A Gas Density @ 70°F 1 atm (lb/ft³) N/A Specific Volume @ 70°F 1 atm (ft³/lb) N/A Specific Gravity N/A Specific Heat @ 70°F (Btu/lbmol–°F) N/A
- Ethane
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Formula C₂H₆ Molecular Weight (lb/mol) 30.07 Critical Temp. (°F) 90.4 Critical Pressure (psia) 707.9 Boiling Point (°F) –127.5 Melting Point (°F) –297.9 Psat @ 70°F (psia) 559.6 Liquid Density @ 70°F (lb/ft³) 20.98 Gas Density @ 70°F 1 atm (lb/ft³) 0.0784 Specific Volume @ 70°F 1 atm (ft³/lb) 12.76 Specific Gravity 1.065 Specific Heat @ 70°F (Btu/lbmol–°F) 12.67 - Ethyl Chloride
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Formula C₂H₅Cl Molecular Weight (lb/mol) 64.52 Critical Temp. (°F) 369.0 Critical Pressure (psia) 764.2 Boiling Point (°F) 54.0 Melting Point (°F) –217.0 Psat @ 70°F (psia) 20.3 Liquid Density @ 70°F (lb/ft³) 55.78 Gas Density @ 70°F 1 atm (lb/ft³) 0.1720 Specific Volume @ 70°F 1 atm (ft³/lb) 5.82 Specific Gravity 2.336 Specific Heat @ 70°F (Btu/lbmol–°F) 15.41 - Ethylene
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Formula C₂H₄ Molecular Weight (lb/mol) 28.05 Critical Temp. (°F) 49.1 Critical Pressure (psia) 742.7 Boiling Point (°F) –154.8 Melting Point (°F) –272.5 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0730 Specific Volume @ 70°F 1 atm (ft³/lb) 13.70 Specific Gravity 0.992 Specific Heat @ 70°F (Btu/lbmol–°F) 10.28 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere.
- Fluorine
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Formula F₂ Molecular Weight (lb/mol) 38.00 Critical Temp. (°F) –199.9 Critical Pressure (psia) 754.6 Boiling Point (°F) –306.8 Melting Point (°F) –363.4 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0983 Specific Volume @ 70°F 1 atm (ft³/lb) 10.17 Specific Gravity 1.336 Specific Heat @ 70°F (Btu/lbmol–°F) 7.49 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere.
- Halocarbon-116
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Formula C2F6 Molecular Weight (lb/mol) 138.01 Critical Temp. (°F) 67.5 Critical Pressure (psia) 432.2 Boiling Point (°F) -108.7 Melting Point (°F) -149.3 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft3) (note 1) Gas Density @ 70°F 1 atm (lb/ft3) 0.3616 Specific Volume @ 70°F 1 atm (ft3/lb) 2.77 Specific Gravity 4.913 Specific Heat @ 70°F (Btu/lbmol-°F) 25.25 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Halocarbon-23
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Formula CHF₃ Molecular Weight (lb/mol) 70.01 Critical Temp. (°F) 78.7 Critical Pressure (psia) 701.4 Boiling Point (°F) –115.5 Melting Point (°F) –247.3 Psat @ 70°F (psia) 626.0 Liquid Density @ 70°F (lb/ft³) 48.67 Gas Density @ 70°F 1 atm (lb/ft³) 0.1827 Specific Volume @ 70°F 1 atm (ft³/lb) 5.47 Specific Gravity 2.482 Specific Heat @ 70°F (Btu/lbmol–°F) 12.25 - Helium
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Formula He Molecular Weight (lb/mol) 4.00 Critical Temp. (°F) –450.3 Critical Pressure (psia) 33.0 Boiling Point (°F) –452.1 Melting Point (°F) -- Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0103 Specific Volume @ 70°F 1 atm (ft³/lb) 96.65 Specific Gravity 0.138 Specific Heat @ 70°F (Btu/lbmol–°F) 4.97 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Hydrogen
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Formula H₂ Molecular Weight (lb/mol) 2.02 Critical Temp. (°F) –400.0 Critical Pressure (psia) 187.5 Boiling Point (°F) –423.0 Melting Point (°F) –434.5 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0052 Specific Volume @ 70°F 1 atm (ft³/lb) 191.90 Specific Gravity 0.069 Specific Heat @ 70°F (Btu/lbmol–°F) 6.87 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Hydrogen Chloride
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Formula HCl Molecular Weight (lb/mol) 36.46 Critical Temp. (°F) 124.5 Critical Pressure (psia) 1199.2 Boiling Point (°F) –120.8 Melting Point (°F) –173.6 Psat @ 70°F (psia) 629.1 Liquid Density @ 70°F (lb/ft³) 51.28 Gas Density @ 70°F 1 atm (lb/ft³) 0.0948 Specific Volume @ 70°F 1 atm (ft³/lb) 10.54 Specific Gravity 1.289 Specific Heat @ 70°F (Btu/lbmol–°F) 7.29 - Hydrogen Fluoride
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Formula HF Molecular Weight (lb/mol) 20.01 Critical Temp. (°F) 370.4 Critical Pressure (psia) 940.5 Boiling Point (°F) 67.14 Melting Point (°F) –118.4 Psat @ 70°F (psia) 15.54 Liquid Density @ 70°F (lb/ft³) 60.26 Gas Density @ 70°F 1 atm (lb/ft³) (note 2) Specific Volume @ 70°F 1 atm (ft³/lb) (note 2) Specific Gravity (note 2) Specific Heat @ 70°F (Btu/lbmol–°F) (note 2) Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Hydrogen Sulfide
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Formula H₂S Molecular Weight (lb/mol) 34.08 Critical Temp. (°F) 212.8 Critical Pressure (psia) 1306.5 Boiling Point (°F) –74.9 Melting Point (°F) –122.0 Psat @ 70°F (psia) 263.6 Liquid Density @ 70°F (lb/ft³) 48.52 Gas Density @ 70°F 1 atm (lb/ft³) 0.0888 Specific Volume @ 70°F 1 atm (ft³/lb) 11.26 Specific Gravity 1.207 Specific Heat @ 70°F (Btu/lbmol–°F) 8.29
- Krypton
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Formula Kr Molecular Weight (lb/mol) 83.80 Critical Temp. (°F) –82.8 Critical Pressure (psia) 798.0 Boiling Point (°F) –244.1 Melting Point (°F) –251.3 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.2172 Specific Volume @ 70°F 1 atm (ft³/lb) 4.60 Specific Gravity 2.951 Specific Heat @ 70°F (Btu/lbmol–°F) 4.99 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere.
- Methane
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Formula CH₄ Molecular Weight (lb/mol) 16.04 Critical Temp. (°F) –116.2 Critical Pressure (psia) 673.0 Boiling Point (°F) –258.7 Melting Point (°F) –296.5 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0416 Specific Volume @ 70°F 1 atm (ft³/lb) 24.06 Specific Gravity 0.565 Specific Heat @ 70°F (Btu/lbmol–°F) 8.53 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere.
- Neon
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Formula Ne Molecular Weight (lb/mol) 20.18 Critical Temp. (°F) –379.8 Critical Pressure (psia) 384.9 Boiling Point (°F) –410.9 Melting Point (°F) –415.5 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0522 Specific Volume @ 70°F 1 atm (ft³/lb) 19.17 Specific Gravity 0.709 Specific Heat @ 70°F (Btu/lbmol–°F) 4.97 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Nitrogen
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Formula N₂ Molecular Weight (lb/mol) 28.01 Critical Temp. (°F) –232.5 Critical Pressure (psia) 492.3 Boiling Point (°F) –320.5 Melting Point (°F) –345.9 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0725 Specific Volume @ 70°F 1 atm (ft³/lb) 13.80 Specific Gravity 0.967 Specific Heat @ 70°F (Btu/lbmol–°F) 6.97 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Nitrogen Trifluoride
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Formula NF₃ Molecular Weight (lb/mol) 71.00 Critical Temp. (°F) –38.5 Critical Pressure (psia) 646.9 Boiling Point (°F) –200.2 Melting Point (°F) –340.2 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.1842 Specific Volume @ 70°F 1 atm (ft³/lb) 5.43 Specific Gravity 2.503 Specific Heat @ 70°F (Btu/lbmol–°F) 12.66 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Nitrous Oxide
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Formula N₂O Molecular Weight (lb/mol) 44.01 Critical Temp. (°F) 97.6 Critical Pressure (psia) 1053.3 Boiling Point (°F) –128.3 Melting Point (°F) –131.6 Psat @ 70°F (psia) 751.3 Liquid Density @ 70°F (lb/ft³) 48.21 Gas Density @ 70°F 1 atm (lb/ft³) 0.1145 Specific Volume @ 70°F 1 atm (ft³/lb) 8.74 Specific Gravity 1.555 Specific Heat @ 70°F (Btu/lbmol–°F) 9.17
- Octafluoropropane
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Formula C₃F₈ Molecular Weight (lb/mol) 188.02 Critical Temp. (°F) 161.4 Critical Pressure (psia) 386.1 Boiling Point (°F) –34.3 Melting Point (°F) –233.8 Psat @ 70°F (psia) 112.8 Liquid Density @ 70°F (lb/ft³) 84.66 Gas Density @ 70°F 1 atm (lb/ft³) 0.4956 Specific Volume @ 70°F 1 atm (ft³/lb) 2.02 Specific Gravity 6.734 Specific Heat @ 70°F (Btu/lbmol–°F) 35.48 - Oxygen
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Formula O₂ Molecular Weight (lb/mol) 32.00 Critical Temp. (°F) –181.8 Critical Pressure (psia) 729.1 Boiling Point (°F) –297.3 Melting Point (°F) –361.9 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.0828 Specific Volume @ 70°F 1 atm (ft³/lb) 12.08 Specific Gravity 1.1 Specific Heat @ 70°F (Btu/lbmol–°F) 7.03 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere.
- Phosphine
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Formula PH₃ Molecular Weight (lb/mol) 34.00 Critical Temp. (°F) 124.9 Critical Pressure (psia) 947.9 Boiling Point (°F) –126.0 Melting Point (°F) –208.8 Psat @ 70°F (psia) 493.2 Liquid Density @ 70°F (lb/ft³) 35.50 Gas Density @ 70°F 1 atm (lb/ft³) 0.0885 Specific Volume @ 70°F 1 atm (ft³/lb) 11.30 Specific Gravity 1.203 Specific Heat @ 70°F (Btu/lbmol–°F) 8.93 - Phosphorus Pentafluoride
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Formula PF₅ Molecular Weight (lb/mol) 125.97 Critical Temp. (°F) 66.1 Critical Pressure (psia) 492.3 Boiling Point (°F) –120.1 Melting Point (°F) –136.8 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.3230 Specific Volume @ 70°F 1 atm (ft³/lb) 3.10 Specific Gravity 4.310 Specific Heat @ 70°F (Btu/lbmol–°F) 20.27 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Propane
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Formula C₃H₈ Molecular Weight (lb/mol) 44.10 Critical Temp. (°F) 206.6 Critical Pressure (psia) 617.6 Boiling Point (°F) –43.7 Melting Point (°F) –305.8 Psat @ 70°F (psia) 124.9 Liquid Density @ 70°F (lb/ft³) 31.12 Gas Density @ 70°F 1 atm (lb/ft³) 0.1160 Specific Volume @ 70°F 1 atm (ft³/lb) 8.62 Specific Gravity 1.576 Specific Heat @ 70°F (Btu/lbmol–°F) 17.71 - Propylene
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Formula C₃H₆ Molecular Weight (lb/mol) 42.08 Critical Temp. (°F) 197.5 Critical Pressure (psia) 666.3 Boiling Point (°F) –53.8 Melting Point (°F) –301.4 Psat @ 70°F (psia) 152.2 Liquid Density @ 70°F (lb/ft³) 31.92 Gas Density @ 70°F 1 atm (lb/ft³) 0.1105 Specific Volume @ 70°F 1 atm (ft³/lb) 9.05 Specific Gravity 1.501 Specific Heat @ 70°F (Btu/lbmol–°F) 15.56
- Silicon Tetrachloride
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Formula SiCl₄ Molecular Weight (lb/mol) 169.90 Critical Temp. (°F) 453.0 Critical Pressure (psia) 543.8 Boiling Point (°F) 136.6 Melting Point (°F) –94.0 Psat @ 70°F (psia) 4.0 Liquid Density @ 70°F (lb/ft³) 92.13 Gas Density @ 70°F 1 atm (lb/ft³) (note 2) Specific Volume @ 70°F 1 atm (ft³/lb) (note 2) Specific Gravity (note 2) Specific Heat @ 70°F (Btu/lbmol–°F) (note 2) Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Silicon Tetrafluoride
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Formula SiF₄ Molecular Weight (lb/mol) 104.08 Critical Temp. (°F) 6.5 Critical Pressure (psia) 539.3 Boiling Point (°F) –138.6 Melting Point (°F) –124.2 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.2711 Specific Volume @ 70°F 1 atm (ft³/lb) 3.69 Specific Gravity 3.683 Specific Heat @ 70°F (Btu/lbmol–°F) 17.50 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Sulfur Dioxide
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Formula SO₂ Molecular Weight (lb/mol) 64.06 Critical Temp. (°F) 315.5 Critical Pressure (psia) 1142.0 Boiling Point (°F) 14.3 Melting Point (°F) –103.9 Psat @ 70°F (psia) 49.3 Liquid Density @ 70°F (lb/ft³) 85.98 Gas Density @ 70°F 1 atm (lb/ft³) 0.1682 Specific Volume @ 70°F 1 atm (ft³/lb) 5.94 Specific Gravity 2.285 Specific Heat @ 70°F (Btu/lbmol–°F) 9.58 - Sulfur Hexafluoride
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Formula SF₆ Molecular Weight (lb/mol) 146.05 Critical Temp. (°F) 114.0 Critical Pressure (psia) 545.2 Boiling Point (°F) –83 Melting Point (°F) –58.9 Psat @ 70°F (psia) 314.4 Liquid Density @ 70°F (lb/ft³) 86.25 Gas Density @ 70°F 1 atm (lb/ft³) 0.3824 Specific Volume @ 70°F 1 atm (ft³/lb) 2.61 Specific Gravity 5.196 Specific Heat @ 70°F (Btu/lbmol–°F) 22.91 - Sulfur Tetrafluoride
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Formula SF₄ Molecular Weight (lb/mol) 108.06 Critical Temp. (°F) 195.6 Critical Pressure (psia) -- Boiling Point (°F) –40.7 Melting Point (°F) –186 Psat @ 70°F (psia) 154.7 Liquid Density @ 70°F (lb/ft³) -- Gas Density @ 70°F 1 atm (lb/ft³) 0.278 Specific Volume @ 70°F 1 atm (ft³/lb) 3.59 Specific Gravity 3.71 Specific Heat @ 70°F (Btu/lbmol–°F) --
- Tetrafluoromethane
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Formula CF₄ Molecular Weight (lb/mol) 88.00 Critical Temp. (°F) –50.2 Critical Pressure (psia) 543.6 Boiling Point (°F) –198.5 Melting Point (°F) –298.5 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.2285 Specific Volume @ 70°F 1 atm (ft³/lb) 4.38 Specific Gravity 3.104 Specific Heat @ 70°F (Btu/lbmol–°F) 14.43 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere. - Tungsten Hexafluoride
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Formula WF₆ Molecular Weight (lb/mol) 297.84 Critical Temp. (°F) 337.7 Critical Pressure (psia) 619.3 Boiling Point (°F) 62.7 Melting Point (°F) 35.6 Psat @ 70°F (psia) 17.1 Liquid Density @ 70°F (lb/ft³) 216.13 Gas Density @ 70°F 1 atm (lb/ft³) 0.7951 Specific Volume @ 70°F 1 atm (ft³/lb) 1.26 Specific Gravity 10.803 Specific Heat @ 70°F (Btu/lbmol–°F) 28.37
- Xenon
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Formula Xe Molecular Weight (lb/mol) 131.3 Critical Temp. (°F) 61.9 Critical Pressure (psia) 847.1 Boiling Point (°F) –162.6 Melting Point (°F) –169.4 Psat @ 70°F (psia) (note 1) Liquid Density @ 70°F (lb/ft³) (note 1) Gas Density @ 70°F 1 atm (lb/ft³) 0.3414 Specific Volume @ 70°F 1 atm (ft³/lb) 2.93 Specific Gravity 4.639 Specific Heat @ 70°F (Btu/lbmol–°F) 5.02 Notes:
1 = Signifies at 70°F, the compound is above its critical temperature.
2 = Signifies that at 70°F, the compound is below the normal boiling point and only the equilibrium vapor is present at 1 atmosphere.