
氣體的化學(xué)性質(zhì)是閥門選型中經(jīng)常需要考慮的部分,以下列出常見的氣體化學(xué)性質(zhì)如密度,分子量等,供廣大客戶參考
名稱  | 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  | 
  | ||||||||||||
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  | 
  | |||||
氮  | N2  | 28.0134  | 30.27  | 1.2506  | 1.165  | 0.9673  | 77.35  | 1.4*  | 126.1  | 34.6  | 312  | 
  | |||||
氧  | O2  | 31.9988  | 26.5  | 1.4289  | 1.331  | 1.1053  | 90.17  | 1.397*  | 154.78  | 51.7  | 4265  | 
  | |||||
氬  | Ar  | 39.948  | 21.23  | 1.7840  | 
  | 1.38  | 87.291  | 1.68  | 150.7  | 49.6  | 535  | 
  | |||||
氖  | Ne  | 20.183  | 42.02  | 0.9000  | 
  | 0.6062  | 27.09  | 1.68  | 44.4  | 27.8  | 483  | 
  | |||||
氦  | He  | 4.003  | 21.184  | 0.17847  | 
  | 0.1380  | 4.215  | 1.66  | 5.199  | 2.34  | 69  | 
  | |||||
氪  | Kr  | 83.40  | 10.12  | 3.6431  | 
  | 2.818  | 119.79  | 1.67  | 209.4  | 56.1  | 909  | 
  | |||||
氙  | Xe  | 131.30  | 6.46  | 5.89  | 
  | 4.53  | 165.02  | 1.666  | 289.75  | 59.9  | 1105  | 
  | |||||
氫  | H2  | 2.016  | 420.63  | 0.08988  | 0.084  | 0.06952  | 20.38  | 1.412*  | 32.976  | 13.2  | 31.45  | 
  | |||||
甲烷  | CH4  | 16.043  | 52.86  | 0.7167  | 0.668  | 0.5544  | 111.7  | 1.315*  | 190.7  | 47.3  | 162  | 
  | |||||
乙烷  | C2H6  | 30.07  | 28.20  | 1.3567  | 1.263  | 1.0494  | 184.52  | 1.18*  | 305.45  | 49.8  | 203  | 
  | |||||
丙烷  | C3H8  | 44.097  | 19.23  | 2.005  | 1.867  | 1.5509  | 231.05  | 1.13*  | 369.95  | 43.4  | 220  | 
  | |||||
正丁烷  | C4H10  | 58.124  | 14.59  | 2.703  | 
  | 2.091  | 272.65  | 1.10*  | 425.15  | 38.71  | 228  | 
  | |||||
異丁烷  | C4H10  | 58.124  | 14.59  | 2.675  | 
  | 2.0692  | 261.45  | 1.11*  | 408.15  | 37.2  | 222  | 
  | |||||
正戊烷  | C5H12  | 72.151  | 11.75  | 3.215  | 
  | 2.4869  | 309.25  | 1.07*  | 469.75  | 34.37  | 244  | 
  | |||||
乙烯  | C2H4  | 28.054  | 30.23  | 1.2604  | 1.174  | 0.975  | 169.45  | 1.22  | 283.05  | 51.6  | 227  | 
  | |||||
丙烯  | C3H6  | 42.081  | 20.15  | 1.914  | 1.784  | 1.48  | 225.45  | 1.15*  | 365.05  | 47.1  | 233  | 
  | |||||
丁烯-1  | C4H8  | 56.108  | 15.11  | 2.500  | 
  | 1.9338*  | 266.85  | 1.11*  | 419.15  | 40.99  | 233  | 
  | |||||
順丁烯-2  | C4H8  | 56.108  | 15.11  | 2.500  | 
  | 1.9338*  | 276.85  | 1.1214*  | 433.15  | 42.89  | 238  | 
  | |||||
反丁烯-2  | C4H8  | 56.108  | 15.11  | 2.500  | 
  | 1.9338*  | 274.05  | 1.1073*  | 428.15  | 41.83  | 238  | 
  | |||||
異丁烯  | C4H8  | 56.108  | 15.11  | 2.500  | 
  | 1.9338  | 266.25  | 1.1058*  | 417.85  | 40.77  | 234  | 
  | |||||
乙炔  | C2H2  | 26.038  | 32.57  | 1.1717  | 1.091  | 0.9063  | 189.13(升華)  | 1.24  | 309.71  | 63.7  | 231  | 
  | |||||
苯  | C6H6  | 78.114  | 10.86  | 3.3  | 
  | 2.553  | 353.25  | 1.101  | 562.15  | 50.19  | 304  | 
  | |||||
一氧化碳  | CO  | 28.0106  | 30.27  | 1.2584  | 1.165  | 0.9672  | 81.65  | 1.395  | 132.92  | 35.6  | 301  | 
  | |||||
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  | 
  | |||||
氧化氮  | NO  | 30.0061  | 28.26  | 1.3401  | 
  | 1.0366  | 121.45  | 1.4  | 179.15  | 66.1  | 52  | 
  | |||||
二氧化氮  | NO2  | 46.0055  | 18.43  | 2.055  | 
  | 1.59  | 294.35  | 1.31  | 431.35  | 103.3  | 570  | 
  | |||||
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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