Dichlorofluoromethane

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Dichlorofluoromethane

IUPAC name Dichlorofluoromethane
Other names Fluorodichloromethane, Monofluorodichloromethane, Dichloromonofluoromethane, Freon 21, Refrigerant 21, R 21, HCFC 21, Algofrene Type 5, Arcton 7, Halon 112, UN 1029
Identifiers
CAS number	75-43-4^Y
PubChem	6370
ChemSpider	6130^Y
UNII	7GAO4CRJ0B^Y
EC number	200-869-8
ChEMBL	CHEMBL116813^Y
RTECS number	PA8400000
Jmol-3D images	Image 1
SMILES ClC(Cl)F
InChI InChI=1S/CHCl2F/c2-1(3)4/h1H^Y Key: UMNKXPULIDJLSU-UHFFFAOYSA-N^Y InChI=1/CHCl2F/c2-1(3)4/h1H Key: UMNKXPULIDJLSU-UHFFFAOYAU
Properties
Molecular formula	CHCl₂F
Molar mass	102.92 g/mol
Appearance	Colorless gas
Density	1.405 g/cm³ at 9 °C 1.366 kg/m³ at 25 °C
Melting point	-135 °C
Boiling point	8.92 °C
Solubility in water	9.420 g/l at 30 °C
log P	1.55
Vapor pressure	160 kPa
k_H	0.19 mol.kg^-1.bar^-1
Hazards
R-phrases	R59
S-phrases	S59
Main hazards	Dangerous for the environment (N)
Autoignition temperature	522 °C
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Dichlorofluoromethane or Freon 21 or R 21 is a halomethane or hydrochlorofluorocarbon. It is a colorless and odorless gas.

Its critical point is at 178.5 °C (451.7 K) and 5.17 MPa (51.7 bar). At temperatures from 5 K to 105 K it has one phase in the space group Pbca.

Uses

Dichlorofluoromethane was used as a propellant and refrigerant, but due to its ozone depletion it has been set to be phased out. It has ozone depletion potential 0.04. Production and consumption has been since 2004 reduced to 15% of level from 1989 and it is to be phased out in 2015 according to Montreal Protocol.

External links

v t e Halomethanes

Monosubstituted	CH₃F CH₃Cl CH₃Br CH₃I

Disubstituted	CH₂F₂ CH₂ClF CH₂BrF CH₂FI CH₂Cl₂ CH₂BrCl CH₂ClI CH₂Br₂ CH₂BrI CH₂I₂

Trisubstituted	CHF₃ CHClF₂ CHBrF₂ CHF₂I CHCl₂F CHBrClF CHClFI CHBr₂F CHBrFI CHFI₂ CHCl₃ CHBrCl₂ CHCl₂I CHBr₂Cl CHBrClI CHClI₂ CHBr₃ CHBr₂I CHBrI₂ CHI₃

Tetrasubstituted	CF₄ CClF₃ CBrF₃ CF₃I CCl₂F₂ CBrClF₂ CClF₂I CBr₂F₂ CBrF₂I CF₂I₂ CCl₃F CBrCl₂F CCl₂FI CBr₂ClF C*BrClFI CClFI₂ CBr₃F CBr₂FI CBrFI₂ CFI₃ CCl₄ CBrCl₃ CCl₃I CBr₂Cl₂ CBrCl₂I CCl₂I₂ CBr₃Cl CBr₂ClI CBrClI₂ CClI₃ CBr₄ CBr₃I CBr₂I₂ CBrI₃ CI₄

* Chiral compound.

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