Cl | F--C--F | H 

Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC) with chemical formula CHClF₂ and CAS number 75-45-6. It is better known under its code names of HCFC-22, R-22, Halocarbon R22 or Freon 22, and is commonly used in air conditioning applications, such as rooftop units and window air conditioners. Image File history File links File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... This article should be merged with Freon, Halon, CFC, and Hydrochlorofluorocarbon and added to Alkyl halide Hydrochlorofluorocarbons (HCFCs) is one of a class of fluorocarbon compounds that are used primarily as chlorofluorocarbon (CFC) substitutes. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... Jump to: navigation, search General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Jump to: navigation, search General Name, Symbol, Number hydrogen, H, 1 Chemical series nonmetals Group, Period, Block 1, 1, s Appearance colorless Atomic mass 1. ... Jump to: navigation, search General Name, Symbol, Number chlorine, Cl, 17 Chemical series halogens Group, Period, Block 17, 3, p Appearance yellowish green Atomic mass 35. ... Jump to: navigation, search General Name, Symbol, Number fluorine, F, 9 Chemical series halogens Group, Period, Block 17, 2, p Appearance pale greenish-yellow gas Atomic mass 18. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences and alloys. ... Note: in the broadest sense, air conditioning can refer to any form of heating, ventilation, and air-conditioning. ...

Chlorodifluoromethane was first used as an alternative to the ozone depleting CFC-11 and CFC-12, but was later decided to be not environmentally friendly enough, although its ozone depletion potential is 0.05, among the lowest for chlorine-containing haloalkanes. It will be phased out soon under the Montreal Protocol, to be replaced by more environmentally friendly refrigerants such as R-410A (an azeotropic mixture of difluoromethane and pentafluoroethane), R-134A (1-1-1-2 tetrafluroethane) and R-409C. Jump to: navigation, search R-11, or trichlorofluoromethane, was the first widely used refrigerant. ... For other uses, see CFC (disambiguation). ... The ODP, or Ozone Depletion Potential, of a compound is the relative amount of degradation to the ozone layer it can cause, with R-11 being fixed at an ODP of 1. ... Jump to: navigation, search General Name, Symbol, Number chlorine, Cl, 17 Chemical series halogens Group, Period, Block 17, 3, p Appearance yellowish green Atomic mass 35. ... The haloalkanes are a group of chemical compounds, consisting of alkanes, such as methane or ethane, with one or more halogens linked, such as chlorine or fluorine, making them a type of organic halide. ... The largest Antarctic ozone hole ever recorded (September 2000) The Montreal Protocol on Substances That Deplete the Ozone Layer is an international treaty designed to protect the ozone layer from depletion by phasing out the production of a number of substances believed to be responsible for ozone depletion. ... Jump to: navigation, search R-410A is an azeotropic mixture of difluoromethane and pentafluoroethane which is used as a refrigerant in air conditioning applications. ... An azeotrope is a liquid mixture of two or more components which has a unique constant boiling point. ... Difluoromethane is an organic compound of the di-halogenoalkane variety. ... 1,1,2,2,2-Pentafluoroethane, also called simply pentafluoroethane or R-125, is a refrigerant that has zero ozone depletion potential. ... 1,1,1,2-Tetrafluoroethane, also called simply tetrafluoroethane or R-134a, is a refrigerant that has zero ozone depletion potential and thermodynamic properties similar to R-12. ...

Physical Properties:

• Molecular Weight: 86.48 g/mol
• Liquid density (1.013 bar at boiling point): 1413 kg/m³
• Liquid/gas equivalent (1.013 bar and 15 °C (59 °F)): 385 vol/vol
• Boiling point (1.013 bar): -40.8 °C
• Latent heat of vaporization (1.013 bar at boiling point): 233.95 kJ/kg
• Critical temperature: 96 °C
• Critical pressure: 49.36 bar
• Gas density (1.013 bar at boiling point): 4.706 kg/m³
• Gas density (1.013 bar and 15 °C (59 °F)): 3.66 kg/m³
• Compressibility Factor (Z) (1.013 bar and 15 °C (59 °F)): 0.9831
• Specific gravity (air = 1) (1.013 bar and 21 °C (70 °F)): 3.08
• Specific volume (1.013 bar and 21 °C (70 °F)): 0.275 m³/kg
• Heat capacity at constant pressure (Cp) (1.013 bar and 30 °C (86 °F)): 0.057 kJ/(mol.K)
• Heat capacity at constant volume (Cv) (1.013 bar and 30 °C (86 °F)): 0.048 kJ/(mol.K)
• Ratio of specific heats (Gamma:Cp/Cv) (1.013 bar and 30 °C (86 °F)) : 1.178253
• Viscosity (1.013 bar and 0 °C (32 °F)): 0.0001256 Poise
• Solubility in water (1 bar and 25 °C (77 °F)): 0.7799 vol/vol