R22 is a hydrochlorofluorocarbon (HCFC) refrigerant used in air conditioning and refrigeration systems.

R22 refrigerant, also known as HCFC-22, is a hydrochlorofluorocarbon refrigerant that has been widely used in air conditioning and refrigeration systems for many years. It is primarily used in residential and commercial HVAC systems, as well as in industrial refrigeration applications. R22 is used in a closed loop system to cool and dehumidify the air inside buildings, as well as in refrigeration systems to keep food and other perishable items at a consistent, cool temperature. However, due to its contribution to ozone depletion, many countries are phasing out the use of R22. This has led to the development and use of alternative refrigerants, such as HFCs and HCFCs, which have a lower environmental impact.

General Information

  • R22

Refrigerant Class
  • HCFC

Refrigerant Type
  • Single

Linear Formula
  • CHClF2

Chemical Name
  • Chlorodifluoromethane

  • R-12, R-502


Physicial Properties

Molecular Weight
  • 86.47 g/mol

Boiling Point
  • -40.8°C

Freezing Point
  • -150.7°C

Critical Temperature
  • 96.2°C

Vapor Pressure
  • 4.99 MPa (25°C)

Vapor Density
  • 2.86 (air = 1.0)

Relative Density
  • 1.21 g/cm³ (liquid at 25°C)

Water Solubility
  • 0.3 g/L (25°C)

Evaporation Rate
  • 1.5 (butyl acetate = 1.0)


  • Non-flammable

Flammability Range
  • None

Flash Point
  • Not applicable

Global Warming Potential (GWP)
  • 1810

Ozone Depletion Potential (ODP)
  • 0.05

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