... temperature: 288.94 °CCritical pressure: 4898 kPaSpecific heat let (gas, 90 °C and 101.325 kPa) : Cp = 1361.96 kJ ... / (kg. K) Cv = 1238.07 kJ / (kg. K)(liquid, 5 °C) : 1628.665 kJ / (kg ... 20 °C) : 1699.841 kJ / (kg. K)Heat capacity than: (gas, 90 °C and 101.325 kPa) : Cp/Cv = 1 ... , liquid) : 0.13942 W / (m.K)(0 °C, liquid,) : 0.0087671 W / (m.K)Refractive index (20 °C) : nD = ...