This page lists chemical and physical properties of 1,1,1,2-tetrafluoroethane.
Physical Properties HFC-134aBoiling Point at 1 atm Freezing PointCritical TemperatureCritical Pressure 4060 kPa (588.9 lb/in2 abs)Critical Volume1.94 × 10−3 m3/kg (0.031 ft3/lb)Critical Density515.3 kg/m3 (32.17 lb/ft3)Density (Liquid) at 25 °C1206 kg/m3 (75.28 lb/ft3)Density (Saturated Vapor) at boiling point5.25 kg/m3 (0.328 lb/ft3)Heat Capacity (Liquid) at 25 °C0.339 kcal/kg·KHeat Capacity (Vapor at Constant Pressure) at 25 °C and 1 atm0.204 kcal/kg·KVapor Pressure at 25 °C 666.1 kPa Heat of Vaporization at Boiling Point 217.2 kJ/kg (93.4 Btu/lb) Thermal Conductivity at 25 °C, liquid 0.0824 W/m·K (0.0478 Btu/hr·ft°F) Thermal Conductivity at 25 °C vapor at 1 atm 0.0145 W/m·K (0.00836 Btu/hr·ft°F)Viscosity at 25 °C, liquid0.202 mPa·S (cP)Viscosity at 25 °C, vapor at 1 atm0.012 mPa·S (cP)Solubility in water at 25 °C and 1 atm 0.15% by weightSolubility of water in HFC-134a at 25 °C0.11% by weightFlammability Limits in Air at 1 atmNoneAutoignition temperatureOzone depletion potential0Halocarbon Global Warming Potential (HGWP) (For CFC-11, HGWP = 1)0.28 Global Warming Potential (GWP) (100 yr ITH. For CO2, GWP = 1)1,200Toxicity Acceptable Exposure Limit* (8- and 12-hr time-weighted average)1,000 ppm (v/v)
* Acceptable Exposure Limit (AEL) is an airborne inhalation exposure limit established by DuPont that specifies time-weighted average concentrations to which nearly all workers may be repeatedly exposed without adverse effects.
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