Refrigerant gas R22

Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22. It is commonly used as a propellant and refrigerant. These applications are being phased out in developed countries due to the compound’s ozone depletion potential (ODP) and high global warming potential (GWP), although global use of R-22 continues to increase because of high demand in developing countries.[1] R-22 is a versatile intermediate in industrial organofluorine chemistry, e.g. as a precursor to tetrafluoroethylene. R-22 cylinders are colored light green.

Refrigerant R22 is very popular for use in all types of household and commercial refrigeration and airconditioning equipment with reciprocating, rotary, scroll and screw compressors. Due to be phased out under the United Nations Montreal protocol.

Refrigerant gas R22

Refrigerant gas R22

  • Medium / Low Temp Refrigeration, Airconditioning
  • Chlorodifluromethane. CHCIF2
  • UN No: 1018
  • CAS No: 75-45-6
  • Ozone Depletion Potential: 0.055
  • Global Warming Potential: 1810
  • HCFC, being phased out.
  • Oil: Mineral and POE.
  • Available in 13.6 Kg cans.

 

Properties
Molecular formula CHClF2
Molar mass 86.47 g/mol
Appearance Colorless gas
Density 3.66 kg/m3 at 15°C, gas
Melting point −175.42 °C (−283.76 °F; 97.73 K)
Boiling point −40.7 °C (−41.3 °F; 232.5 K)
Solubility in water 0.7799 vol/vol at 25 °C; 3.628 g/L
log P 1.08
Vapor pressure 908 kPa at 20 °C
kH 0.033 mol.kg-1.bar-1

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