Detailed Product Description 1,1,1,2-TetrafluoroethaneASHRAE Number R134aMolecular Formula CH2FCF3Molecular Weight 102.0Boiling Point 101.3 KPa(°C) -26.2Freezing Point101.3 KPa(°C) -96.6 Critical Temperature(°C) 101.1Critical Pressure(KPa) 4066.6 Saturated Liquid Density 25°C (kg/m3) 1188.1Specific Heat of Liquid 25°C [KJ(kg.k)] 1.42ODP 0GWP 0.29