性質(zhì) | 氫H2 | 一氧化碳CO | 甲烷CH4 | 乙烷C2H6 | 乙烯C2H4 | 丙烷C3H8 | 丙烯C3H6 |
相對(duì)分子質(zhì)量 | 2.016 | 28.01 | 16.04 | 30.07 | 28.05 | 44.10 | 42.08 |
氣體密度(0℃,101.33kPa)/(kg/m3) | 0.0899 | 1.2506 | 0.7174 | 1.3553 | 1.2605 | 2.0102 | 1.9136 |
液體密度(25℃)/(kg/m3) | - | - | - | 319.7 | - | 493.4 | 529.2 |
相對(duì)密度(與空氣相比) | 0.0695 | 0.9671 | 0.5548 | 1.048 | 0.9748 | 1.554 | 1.479 |
比熱容CP/[kJ/(kg·K)] | 1.296 | 1.300 | 1.542 | 2.240 | 1.885 | 2.955 | 2.671 |
臨界溫度TA/K | 33 | 133 | 190.7 | 305.4 | 283.1 | 369.9 | 365.1 |
臨界壓力PA/MPa | 1.28 | 3.45 | 4.58 | 4.82 | 5.05 | 4.2 | 4.54 |
冰點(diǎn)/℃ | -259.18 | -205 | -182.5 | -172 | -169.4 | -189.9 | -185.2 |
沸點(diǎn)/℃ | -252.75 | -191.48 | -161.49 | -88.3 | -103.9 | -42.17 | -47.7 |
閃點(diǎn)/℃ | ? | ? | ? | ? | ? | -104 | -108 |
自燃點(diǎn)/℃ | 400 | 605 | 540 | 515 | 425 | 450 | 460 |
體積膨脹系數(shù)(20~30)/℃-1 | ? | ? | ? | 0.03309 | 0.01357 | 0.00352 | 0.00329 |
飽和蒸氣壓/MPa 0℃ 25℃ 40℃ | ? | ? | ? | 2.355 4.137 - | 4.024 - - | 0.466 0.951 1.382 | 0.575 1.132 1.623 |
熱值(標(biāo)準(zhǔn)狀態(tài))/(kJ/m3)(高位/低位) | 13742/10783 | 12633/12633 | 39809/35874 | 70291/64343 | 63384/59429 | 101184/93164 | 93591/87592 |
空氣中(20℃)爆炸極限(下限/上限) | 4.0/75.9 | 12.5/74.2 | 5.0/15.0 | 2.9/13.0 | 2.7/13.0 | 2.1/9.5 | 2.0/11.7 |
性質(zhì) | 正丁烷n-C4H10 | 異丁烷i-C4H10 | 丁烯C4H8 | 正戊烷C5H12 | 硫化氫H2S | 空氣- | ? |
相對(duì)分子質(zhì)量 | 58.12 | 58.12 | 56.11 | 72.15 | 34.08 | (29) | ? |
氣體密度(0℃,101.33kPa)/(kg/m3) | 2.7030 | 2.6912 | 2.5968 | 3.4537 | 1.5363 | 1.2931 | ? |
液體密度(20℃)(kg/m3) | 573.2 | 551.1 | 570 | 620.7 | - | - | ? |
相對(duì)密度(與空氣相比) | 2.090 | 2.081 | 2.008 | 2.671 | 1.188 | 1 | ? |
比熱容CP/[kJ/(kg·K)] | 3.703 | - | - | - | 1.554 | 1.304 | ? |
臨界溫度/TA/K | 425.2 | 408.1 | ? | 469.5 | ? | 132.5 | ? |
臨界壓力/PA/MPa | 3.75 | 3.60 | ? | 3.33 | ? | 3.717 | ? |
冰點(diǎn)/℃ | -135 | -145 | -139 | -129.7 | -82.9 | ? | ? |
沸點(diǎn)/℃ | -0.5 | -11.73 | -6.0 | 36.1 | -61.8 | -192 | ? |
閃點(diǎn)/℃ | -82.8 | ? | -80 | ? | ? | ? | ? |
自然點(diǎn)/℃ | 365 | ? | 385 | 260 | 270 | - | ? |
體積膨脹系數(shù)(20-30)/℃-1 | 0.00173 | 0.00297 | 0.00214 | 0.00186 | ? | (水0.00026) | ? |
飽和蒸氣壓/MPa 0℃ 25℃ 40℃ | 0.102 0.240 0.374 | 0.153 0.341 0.510 | 0.127 0.295 0.456 | 0.024 0.067 0.114 | ? | ? | ? |
熱值(標(biāo)準(zhǔn)狀態(tài))/(kJ/m3)(高位/低位) | 133772/123541 | 133772/123541 | 125739/117593 | 169236/156598 | 25342/23362 | ? | ? |
空氣中(20℃)爆炸極限(下限/上限) | 1.5/8.5 | ? | 1.6/10.0(9.4) | 1.4/8.3 | 4.3/45.5 | (液化氣平均值1.5/9.5) | ? |