Structure via PubChem · Public domain (PubChem)
chlorodifluoromethane
Sign in to saveAlso known as difluoromonochloromethane, Difluorochloromethane, Fluorocarbon-22, Freon 22, Genetron 22, Monochlorodifluoromethane, Refrigerant 22, hydrochlorofluorocarbon 22
Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22, or . It was commonly used as a propellant and refrigerant. These applications were phased out under the Montreal Protocol in developed countries in 2020 due to the compound's ozone depletion potential (ODP) and high global warming potential (GWP), and in developing countries this process will be completed by 2030. R-22 is a versatile intermediate in industrial organofluorine chemistry, e.g. as a precursor to tetrafluoroethylene. == Production and curr
Chemical data
- Formula
- CHClF2
- Molecular weight
- 86.47 g/mol
- IUPAC name
- chloro(difluoro)methane
- SMILES
- C(F)(F)Cl
- InChIKey
- VOPWNXZWBYDODV-UHFFFAOYSA-N
- XLogP
- 1.8
- Polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 2
- Formal charge
- 0
via PubChem
Drug data · ChEMBL
- Molecule type
- Small molecule
via ChEMBL · EBI
Wikidata facts
- Subclass of
- per- and polyfluoroalkyl substances
- Has part
- carbon
- Mass
- 85.973
- Has use
- refrigerant
Show 14 more facts
- melting point
- -231
- ozone depletion potential
- 0.04
- canonical SMILES
- C(F)(F)Cl
- Commons category
- Chlorodifluoromethane
- chemical formula
- CHClF₂
- NIOSH Pocket Guide ID
- 0124
- boiling point
- -40.75
- vapor pressure
- 9.4
- solubility
- 0.3
- ionization energy
- 12.20
- time-weighted average exposure limit
- 3500
- short-term exposure limit
- 4375
- global warming potential
- 2106
- electric dipole moment
- 1.42
via Wikidata · CC0
~6 min read
Encyclopedic overview
9 sectionsContents
- Production and current applications
- Environmental effects
- Phaseout in the European Union
- Phaseout in the United States
- R-22, retrofit using substitute refrigerants
- Physical properties
- Price history and availability
- References
- External links
Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22, or . It was commonly used as a propellant and refrigerant. These applications were phased out under the Montreal Protocol in developed countries in 2020 due to the compound's ozone depletion potential (ODP) and high global warming potential (GWP), and in developing countries this process will be completed by 2030. R-22 is a versatile intermediate in industrial organofluorine chemistry, e.g. as a precursor to tetrafluoroethylene. == Production and current applications == Worldwide production of R-22 in 2008 was about 800Gg per year, up from about 450Gg per year in 1998, with most production in developing countries. R-22 use is being phased out in developing countries, where it is largely used for air conditioning applications.
R-22 is prepared from chloroform: HCCl3 + 2 HF → HCF2Cl + 2 HCl
Excerpted from Wikipedia’s “chlorodifluoromethane” article, available under the CC BY-SA 4.0 licence.