Boiling points and heats of vaporization of some substances Compound Boiling temperature at normal pressure Heat of vaporization kJ/kg Acetone 56∘C 538.9 Aluminium 2519∘C 10500 Ammonia −33.34∘C 1371 Butane −1∘C 320 Diethyl ether 34.6∘C 353.1 Ethanol 78.37∘C 841 Phosphine −87.7∘C 429.4 Isopropyl alcohol 82.6∘C 732.2 Methane −161∘C 480.6 Methanol 64.7∘C 1104 Propane −42∘C 356 Iron 2862∘C 6090 Water 100∘C 2257 Hydrogen −252.879∘C 451.9 Source: Wikipedia