Back كلورو ثنائي فلورو الميثان Arabic کولورودی‌فلورومتان AZB Chlordifluormethan Czech Chlordifluormethan Danish Chlordifluormethan German Διφθοροχλωρομεθάνιο Greek R22 Spanish Klorodifluorometano Basque کلرودی‌فلورومتان Persian Difluorikloorimetaani Finnish

Chlorodifluoromethane

Chlorodifluoromethane

Liquefied chlorodifluoromethane boiling when exposed to STP
Names
Preferred IUPAC name
Chloro(difluoro)methane
Other names
Chlorodifluoromethane
Difluoromonochloromethane
Monochlorodifluoromethane
HCFC-22
R-22
Genetron 22
Freon 22
Arcton 4
Arcton 22
UN 1018
Difluorochloromethane
Fluorocarbon-22
Refrigerant 22
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.000.793 Edit this at Wikidata
EC Number
  • 200-871-9
KEGG
RTECS number
  • PA6390000
UNII
UN number 1018
  • InChI=1S/CHClF2/c2-1(3)4/h1H checkY
    Key: VOPWNXZWBYDODV-UHFFFAOYSA-N checkY
  • InChI=1/CHClF2/c2-1(3)4/h1H
    Key: VOPWNXZWBYDODV-UHFFFAOYAQ
  • ClC(F)F
Properties
CHClF2
Molar mass 86.47 g/mol
Appearance Colorless gas
Odor Sweetish[1]
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)
0.7799 vol/vol at 25 °C; 3.628 g/L
log P 1.08
Vapor pressure 908 kPa at 20 °C
0.033 mol⋅kg−1⋅bar−1
−38.6·10−6 cm3/mol
Structure
Tetrahedral
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Dangerous for the environment (N), Central nervous system depressant, Carc. Cat. 3
GHS labelling:
GHS07: Exclamation mark
Warning
H420
P202, P262, P271, P403
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
1
0
1
Flash point nonflammable[1]
632 °C (1,170 °F; 905 K)
NIOSH (US health exposure limits):
PEL (Permissible)
 None[1]
REL (Recommended)
 TWA 1000 ppm (3500 mg/m3) ST 1250 ppm (4375 mg/m3)[1]
IDLH (Immediate danger)
 N.D.[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22, or CHClF
2. 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.

R22 - Chlorodifluoromethane Cylinder
  1. ^ a b c d e NIOSH Pocket Guide to Chemical Hazards. "#0124". National Institute for Occupational Safety and Health (NIOSH).

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