Dichlorofluoromethane

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Dichlorofluoromethane
Dichlorofluoromethane.png
Identifiers
CAS number 75-43-4 YesY
PubChem 6370
ChemSpider 6130 YesY
UNII 7GAO4CRJ0B YesY
EC number 200-869-8
ChEMBL CHEMBL116813 YesY
RTECS number PA8400000
Jmol-3D images Image 1
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 (−211 °F; 138 K)
Boiling point 8.92 °C (48.06 °F; 282.07 K)
Solubility in water 9.420 g/l at 30 °C
log P 1.55
Vapor pressure 160 kPa
kH 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 (972 °F; 795 K)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
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[edit]

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[edit]