1,1,1,2-Tetrafluoroethane (data page)

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Properties Table

Physical Properties Units HCF-134a
Chemical Name Ethane, 1,1,1,2-Tetrafluoro
Chemical Formula CH2FCF3
Molecular Weight 102.03
Boiling Point at 1 atm (101.3 kPa or 1.013 bar) °F

°C

–14.9

–26.1

Freezing Point °F

°C

–153.9

–103.3

Critical Temperature °F

°C

213.9

101.1

Critical Pressure kPa

lb/in² abs

4060

588.9

Critical Volume m³/kg

ft³/lb

1.94 × 10-3

0.031

Critical Density kg/m³

lb/ft³

515.3

32.17

Density (Liquid) at 25 °C (77 °F) kg/m³

lb/ft³

1206

75.28

Density (Saturated Vapor) at boiling point kg/m³

lb/ft³

5.25

0.328

Heat Capacity (Liquid) at 25 °C (77 °F) kJ/kg·K or Btu/(lb) (°F) 0.339
Heat Capacity (Vapor at Constant Pressure) at 25 °C (77 °F) and 1 atm (101.3 kPa or 1.013 bar) kJ/kg·K or Btu/(lb) (°F) 0.204

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. 3


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