This page lists chemical and physical properties of 1,1,1,2-tetrafluoroethane.[1]
| Physical Properties | HFC-134a |
|---|---|
| Boiling Point at 1 atm | −15.34 °F (−26.30 °C) |
| Freezing Point | −153.9 °F (−103.3 °C) |
| Critical Temperature | 213.9 °F (101.1 °C) |
| Critical Pressure | 4060 kPa (588.9 lb/in2 abs) |
| Critical Volume | 1.94 × 10−3 m3/kg (0.031 ft3/lb) |
| Critical Density | 515.3 kg/m3 (32.17 lb/ft3) |
| Density (Liquid) at 25 °C | 1206 kg/m3 (75.28 lb/ft3) |
| Density (Saturated Vapor) at boiling point | 5.25 kg/m3 (0.328 lb/ft3) |
| Heat Capacity (Liquid) at 25 °C | 0.339 kcal/kg·K |
| Heat Capacity (Vapor at Constant Pressure) at 25 °C and 1 atm | 0.204 kcal/kg·K |
| Vapor 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, liquid | 0.202 mPa·S (cP) |
| Viscosity at 25 °C, vapor at 1 atm | 0.012 mPa·S (cP) |
| Solubility in water at 25 °C and 1 atm | 0.15% by weight |
| Solubility of water in HFC-134a at 25 °C | 0.11% by weight |
| Flammability Limits in Air at 1 atm | None |
| Autoignition temperature | 770 °C (1,420 °F) |
| Ozone depletion potential | 0 |
| Halocarbon Global Warming Potential (HGWP) (For CFC-11, HGWP = 1) |
0.28 |
| Global Warming Potential (GWP) (100 yr ITH. For CO2, GWP = 1) |
1,200 |
| Toxicity 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.