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1,1,1,2-Tetrafluoroethane is a colorless gas with a slight ethereal odor.

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Formula: CH2FCF3

1,1,1,2-Tetrafluoroethane, commonly known as R-134a, is a haloalkane refrigerant with thermodynamic properties that make it particularly useful in a variety of applications. This non-flammable gas is primarily used in air conditioning systems for automobiles but is also found in domestic refrigeration and other cooling applications.

R-134a is recognized for its environmental benefits, as it doesn’t deplete the ozone layer, unlike its predecessor R-12. It has a moderate Global Warming Potential (GWP), and while efforts are being made to phase it out in favor of even more eco-friendly alternatives, it remains widely used and accepted in many areas.



Further Specifications

Cylinder Sizes

  • It’s primary use is as a substitute for CFC-12 products in refrigeration
  • As a substitute for SF6 in magnesium production
  • Paired with SF6 for laser machining of silicon
  • Highly purified form is used as a propellant in some medical sprays and inhalers
Grade 2
Purity 99.5%
Chloride < 3 ppm
High Boiling Residue < 0.01 ppmv
Non-Condensable <1.5 ppmv
Other Refrigerants < 0.5 ppm
Water < 10 ppm
Acidity (HCL) < 1 ppm
Halogenated Unsaturated Volatile Impurities < 40 ppm
Chemical & Physical Properties
Molecular Weight 102.04 g/mole
Specific Volume 3.7078 cu. ft/lb
Pressure @ 70°F 81.3 psig
Valve Outlet CGA 660; 1/4 flare (30 lbs)
Shipping Information
DOT Name 1,1,1,2-Tetrafluoroethane or Refrigerant Gas r134A
Hazard Class 2.2
DOT No. UN 3159
DOT Label Green, Non-Flammable Gas
CAS No. 811-97-2
Cylinder Size Fill Volume (lb)
1/2 Ton 1,000
125 lb 125
30 lb (disposable) 30