氢气性质沸点:-252.77℃(20.38K)熔点:-259.2℃相对分子质量:2.016液体密度(平衡状态,-252.8℃):169kg/m3气体密度(101.325kPa,0℃):0.0899kg/m3热值:1.4*10^8J/kg空气中的燃烧界限:5%~75%(体积)生产方法:电解水(2H2O=通电=2H2↑+O2↑分解反应)、裂解、煤制气等三相点:-254.4℃比容(101.325kPa,21.2℃):5.987m3/kg气液容积比(15℃,100kPa):974L/L临界温度:-234.8℃临界压力:1664.8kPa临界密度:66.8kg/m³熔化热(-254.5℃)(平衡态):48.84kJ/kg气化热△Hv(-249.5℃):305kJ/kg比热容(101.335kPa,25℃,气体):Cp=7.243kJ/(kg·K)Cv=5.178kJ/(kg·K)比热比(101.325kPa,25℃,气体):Cp/Cv=1.40蒸气压力(正常态,17.703):10.67kPa(正常态,21.621):53.33kPa(正常态,24.249K):119.99kPa粘度(气体,正常态,101.325kPa,0℃):0.010lmPa·S(液体,平衡态,-252.8℃):0.040mPa·s表面张力(平衡态,-252.8℃):3.72mN/m导热系数(气体101.325kPa,0℃):0.1289w/(m·K)(液体,-252.8℃):1264W/(m·K)折射系数nv(101.325kPa,25℃):1.0001265氢气热值:名称高热值低热值(MJ/Nm3)(Kcal/Nm3)(MJ/Kg)(Kcal/Kg)(MJ/Nm3)(Kcal/Nm3)(MJ/Kg)(Kcal/Kg)氢气12.7430441433416010.79257612028667燃气热值表:名称高热值低热值(MJ/Nm3)(Kcal/Nm3)(MJ/Nm3)(Kcal/Nm3)氢气12.74304410.792576一氧化碳12.64301812.643018甲烷39.82951035.888578乙烷70.31679264.3515371丙烷101.22417293.1822256正丁烷133.831957123.5629513异丁烷132.9631757122.7729324戊烷169.2640428156.6337418乙烯63.41514259.4414197丙烯93.612235887.6120925丁烯125.7630038117.6128092戊烯159.138002148.7335525苯162.1538729155.6637180乙炔58.481396856.4913493硫化氢25.35605423.375581LPG92.1-121.4煤气16.72天然气LNG38.5