常用特种气体的性质
常用特种气体的性质，常用特种气体的性质，包括特气的名称、分子式、特种气体密度、温度、特气临界压力、特种气体相对密度、熔点、沸点、液体密度
| 气体名称 | 分子式 | 气体密度kg/m3 | 临界温度 ℃ | 临界压力 MPa | 相对密度kg/m3 | 熔点℃ | 沸点℃ | 液体密度kg/m3 |
| 空气 | Air | 1.2931 | 140.6 | 3.769 | — | — | -194.35 | 876.21 |
| 氮气 | N2 | 1.2474 | -146.9 | 3.4 | 0.967 | -210.0 | -195.8 | 869.5 |
| 氟气 | F2 | 1.554 | -128.8 | 5.215 | 1.312 | -219.62 | -188.1 | 1507 |
| 氢气 | H2 | 0.0899 | -239.9 | 1.297 | 0.0695 | -259.2 | -252.8 | 70.973 |
| 氧气 | O2 | 1.4289 | -118.5 | 5.043 | 1.105 | -218.8 | -183 | 1141 |
| 一氧化碳 | CO | 1.2504 | -140.2 | 3.499 | 0.967 | -205.1 | -191.5 | 789 |
| 二氧化碳 | CO2 | 1.977 | 31 | 7.3815 | 1.53 | -56.6 | -78.5 | 929.5 |
| 笑气 | N2O | 1.977 | 36.4 | 7.254 | 1.53 | -90.8 | -88.5 | 1281.5 |
| 一氧化氮 | NO | 1.34 | -92.9 | 6.55 | 1.34 | -163.6 | -151.8 | 1300 |
| 二氧化氮 | NO2 | 3.4 | 158.2 | 1.0132 | 2.62 | -11.2 | 21.2 | 1443 |
| 二氧化硫 | SO2 | 3.049 | 157.6 | 7.884 | 2.263 | -75.5 | -10 | 1458 |
| 氦气 | He | 0.1785 | -268 | 0.229 | 0.138 | -272.1 | -268.94 | 125.2 |
| 氖气 | Ne | 0.9 | -228.7 | 2.72 | 0.696 | -248.6 | -246.1 | 1207 |
| 氩气 | Ar | 1.7841 | -122.4 | 4.864 | 1.38 | -189.2 | -185.9 | 1416.6 |
| 氪气 | Kr | 3.74 | -63.8 | 5.49 | 2.89 | -157.4 | -153.4 | 2413 |
| 氙气 | Xe | 5.887 | 16.6 | 5.838 | 4.553 | -102.8 | -108.1 | 3057 |
| 三氟化硼 | BF3 | 2.867 | -12.2 | 4.985 | 2.38 | -127.1 | -99.8 | 1589 |
| 六氟化硫 | SF6 | 6.52 | 45.5 | 3.759 | 5.114 | -50.8 | -63.7 | 1880 |
| 硅烷 | SiH4 | 1.42 | -3.4 | 4.843 | 1.114 | -185 | -111.5 | 711 |
| 氨气 | NH3 | 0.7708 | 132.4 | 11.277 | 0.597 | -77.7 | -33.4 | 729 |
| 磷烷 | PH3 | 1.531 | 51.6 | 6.535 | 1.184 | -133.8 | -87.7 | 740 |
| 砷烷 | AsH3 | 4.93 | 99.9 | 6.6875 | 2.69 | -113.5 | -62.5 | 1634 |
| 氟化氢 | HF | 0.922 | 188 | 6.485 | 0.713 | -83.4 | 19.5 | 968 |
| 硫化氢 | H2S | 1.539 | 100.4 | 9.01 | 1.188 | -85.5 | -60.3 | 914.9 |
| 氯化氢 | HCL | 1.5 | 51.4 | 8.258 | 1.267 | -114.2 | -85 | 1191 |
| 四氯化碳 | CCL4 | 6.9015 | 283.2 | 4.5596 | 5.35 | -23.77 | 76.6 | 1470 |
| 溴甲烷 | CH3Br | 3.97 | 194 | 5.22 | 3.355 | -93.6 | 3.56 | 1721.2 |
| 氯乙烷 | C2H5CL | 2.642 | 187.2 | 5.2689 | 2.23 | -136.4 | 12.3 | 877.2 |
| 甲烷 | CH4 | 0.7163 | -82.1 | 4.64 | 0.555 | -182.6 | -161.5 | 422.62 |
| 乙烯 | C2H4 | 1.261 | 9.9 | 5.12 | 0.975 | -169.2 | -103.7 | 567.2 |
| 正丁烷 | 正C4H10 | 2.544 | 152 | 3.7966 | 2.11 | -138.4 | -0.5 | 601.4 |
| 环氧乙烷 | C2H4O | 1.795 | 195.8 | 7190 | 1.49 | -112.5 | 10.5 | 887 |
| 异丁烷 | 异C4H10 | 2.487 | 135 | 3.65 | 2.064 | -159.6 | -11.7 | 593.4 |
| 丙烷 | C3H8 | 2.005 | 96.8 | 4.266 | 1.55 | -187.7 | -42.1 | 582.5 |
| 乙炔 | C2H2 | 1.1747 | 35.2 | 6.19 | 0.908 | -80.55 | -75 | 610 |
| 丙稀 | C3H6 | 1.7855 | 91.8 | 4.6 | 1.48 | -185.2 | -47 | 613.9 |