氣體的化學(xué)性質(zhì)是閥門(mén)選型中經(jīng)常需要考慮的部分,以下列出常見(jiàn)的氣體化學(xué)性質(zhì)如密度,分子量等,供廣大客戶(hù)參考
名稱(chēng) | 分子式 | 分子量 | 氣體常數(shù) R Kg·m kg·K | 密度ρ 0 kg/mm3 | 比重在 0℃, 760mmHg下(空氣=1) | 沸點(diǎn) TbK 760mmHg下 | 比熱比 X在 20℃及 760mmHg下 | 臨界點(diǎn) | |||||||||
在 0℃ 760mmHg下 | 在 20℃ 760mmHg下 | 溫度 TcK | 壓力 Pc kgf/cm2 | 密度ρ C kg/m3 |
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空氣(干) |
| 28.96 | 29.28 | 1.2928 | 1.205 | 1.00 | 78.8 | 1.4* | 132.42~132.52 | 38.4 | 328~320 |
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氮 | N2 | 28.0134 | 30.27 | 1.2506 | 1.165 | 0.9673 | 77.35 | 1.4* | 126.1 | 34.6 | 312 |
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氧 | O2 | 31.9988 | 26.5 | 1.4289 | 1.331 | 1.1053 | 90.17 | 1.397* | 154.78 | 51.7 | 4265 |
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氬 | Ar | 39.948 | 21.23 | 1.7840 |
| 1.38 | 87.291 | 1.68 | 150.7 | 49.6 | 535 |
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氖 | Ne | 20.183 | 42.02 | 0.9000 |
| 0.6062 | 27.09 | 1.68 | 44.4 | 27.8 | 483 |
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氦 | He | 4.003 | 21.184 | 0.17847 |
| 0.1380 | 4.215 | 1.66 | 5.199 | 2.34 | 69 |
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氪 | Kr | 83.40 | 10.12 | 3.6431 |
| 2.818 | 119.79 | 1.67 | 209.4 | 56.1 | 909 |
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氙 | Xe | 131.30 | 6.46 | 5.89 |
| 4.53 | 165.02 | 1.666 | 289.75 | 59.9 | 1105 |
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氫 | H2 | 2.016 | 420.63 | 0.08988 | 0.084 | 0.06952 | 20.38 | 1.412* | 32.976 | 13.2 | 31.45 |
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甲烷 | CH4 | 16.043 | 52.86 | 0.7167 | 0.668 | 0.5544 | 111.7 | 1.315* | 190.7 | 47.3 | 162 |
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乙烷 | C2H6 | 30.07 | 28.20 | 1.3567 | 1.263 | 1.0494 | 184.52 | 1.18* | 305.45 | 49.8 | 203 |
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丙烷 | C3H8 | 44.097 | 19.23 | 2.005 | 1.867 | 1.5509 | 231.05 | 1.13* | 369.95 | 43.4 | 220 |
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正丁烷 | C4H10 | 58.124 | 14.59 | 2.703 |
| 2.091 | 272.65 | 1.10* | 425.15 | 38.71 | 228 |
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異丁烷 | C4H10 | 58.124 | 14.59 | 2.675 |
| 2.0692 | 261.45 | 1.11* | 408.15 | 37.2 | 222 |
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正戊烷 | C5H12 | 72.151 | 11.75 | 3.215 |
| 2.4869 | 309.25 | 1.07* | 469.75 | 34.37 | 244 |
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乙烯 | C2H4 | 28.054 | 30.23 | 1.2604 | 1.174 | 0.975 | 169.45 | 1.22 | 283.05 | 51.6 | 227 |
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丙烯 | C3H6 | 42.081 | 20.15 | 1.914 | 1.784 | 1.48 | 225.45 | 1.15* | 365.05 | 47.1 | 233 |
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丁烯-1 | C4H8 | 56.108 | 15.11 | 2.500 |
| 1.9338* | 266.85 | 1.11* | 419.15 | 40.99 | 233 |
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順丁烯-2 | C4H8 | 56.108 | 15.11 | 2.500 |
| 1.9338* | 276.85 | 1.1214* | 433.15 | 42.89 | 238 |
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反丁烯-2 | C4H8 | 56.108 | 15.11 | 2.500 |
| 1.9338* | 274.05 | 1.1073* | 428.15 | 41.83 | 238 |
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異丁烯 | C4H8 | 56.108 | 15.11 | 2.500 |
| 1.9338 | 266.25 | 1.1058* | 417.85 | 40.77 | 234 |
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乙炔 | C2H2 | 26.038 | 32.57 | 1.1717 | 1.091 | 0.9063 | 189.13(升華) | 1.24 | 309.71 | 63.7 | 231 |
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苯 | C6H6 | 78.114 | 10.86 | 3.3 |
| 2.553 | 353.25 | 1.101 | 562.15 | 50.19 | 304 |
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一氧化碳 | CO | 28.0106 | 30.27 | 1.2584 | 1.165 | 0.9672 | 81.65 | 1.395 | 132.92 | 35.6 | 301 |
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二氧化碳 | CO2 | 44.00995 | 19.27 | 1.977 | 1.842 | 1.5291 | 194.75(升華) | 1.295 | 304.19 | 75.28 | 468 |
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氧化氮 | NO | 30.0061 | 28.26 | 1.3401 |
| 1.0366 | 121.45 | 1.4 | 179.15 | 66.1 | 52 |
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二氧化氮 | NO2 | 46.0055 | 18.43 | 2.055 |
| 1.59 | 294.35 | 1.31 | 431.35 | 103.3 | 570 |
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一氧化二氮 | N2O | 44.0128 | 19.27 | 1.9781 |
| 1.530 | 184.66 | 1.274 | 309.71 | 74.1 | 457 |
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