... PropertiesMolecular Weight86.48Boiling Point, °C-40.82Relative Density(30°C), liquid, g/cm3 1.177Melting Point, °C-160Critical Temperature, °C96.15Critical ... 1700Freezing point 30°C-Specific heat of liquid 30°C , [KJ/(Kg·°C)]0.31Density of saturated liquid 30°C , (g/cm3 )1. ... Cp) , 30°Cand 101.3kPa[KJ/(Kg·°C)]0.16Critical density , g/cm30.526Vaporization heat below boiling point , KJ/Kg233 ...