1,1,1,2-Tetrafluoroethane (data page)
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This page lists chemical and physical properties of 1,1,1,2-tetrafluoroethane.
| Physical Properties | HCF-134a |
|---|---|
| Boiling Point at 1 atm (101.3 kPa or 1.013 bar) | –15.34 °F (–26.3 °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 (77 °F) | 1206 kg/m³ (75.28lb/ft³) |
| Density (Saturated Vapor) at boiling point | 5.25 kg/m³ (0.328 lb/ft³) |
| Heat Capacity (Liquid) at 25 °C (77 °F) | 0.339 kcal/kg·K or Btu/(lb) (°F) |
| Heat Capacity (Vapor at Constant Pressure) at 25 °C (77 °F) and 1 atm (101.3 kPa or 1.013 bar) | 0.204 kcal/kg·K or Btu/(lb) (°F) |
Vapor Pressure at 25 °C (77 °F) kPa 666.1 bar 6.661
psia 96.61
Heat of Vaporization at Boiling Point kJ/kg 217.2 Btu/lb 93.4
Thermal Conductivity at 25 °C (77 °F) Liquid W/m·K 0.0824 Btu/hr·ft°F 0.0478
Vapor at 1 atm (101.3 kPa or 1.013 bar) W/m·K 0.0145 Btu/hr·ft°F 0.00836
Viscosity at 25 °C (77 °F) Liquid mPa·S (cP) 0.202 Vapor at 1 atm (101.3 kPa or 1.013 bar) mPa·S (cP) 0.012
Solubility of HFC-134a wt% 0.15 in Water at 25 °C (77 °F) and 1 atm (101.3 kPa or 1.013 bar)
Solubility of Water in HFC-134a wt% 0.11 at 25 °C (77 °F)
Flammability Limits in Air at 1 atm (101.3 kPa or 1.013 bar) vol % None
Autoignition Temperature °C 770 °F 1,418
Ozone Depletion Potential — 0
Halocarbon Global Warming Potential (HGWP) — 0.28 (For CFC-11, HGWP = 1)
Global Warming Potential (GWP) — 1,200 (100 yr ITH. For CO2, GWP = 1)
TSCA Inventory Status — Reported/Included
Toxicity AEL* (8- and 12-hr TWA) ppm (v/v) 1,000
- AEL (Acceptable Exposure Limit) 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. Note: kPa is absolute pressure.
