Difluorochloromethane | CAS No. 75-45-6 | R-22

Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22, or (CH ClF2). It is commonly used as a propellant and refrigerant. These applications are being phased out in developed countries due to the compound’s ozone depletion potential (ODP) and high global warming potential (GWP), although global use of R-22 continues to increase because of high demand in developing countries. R-22 is a versatile intermediate in industrial organofluorine chemistry, e.g. as a precursor to tetrafluoroethylene. R-22 cylinders are colored light green.

Name: chlorodifluoromethane
CAS: 75-45-6
Molecular Formula: CHClF2
Molecular Weight: 86.4684

Names and Identifiers

Name chlorodifluoromethane
Synonyms Chlorodifluoromethane, Difluoromonochloromethane,Monochlorodifluoromethane, HCFC-22, R-22, Genetron 22, Freon 22, Arcton 4, Arcton 22, UN 1018, Difluorochloromethane, Fluorocarbon-22, Refrigerant 22
CAS 75-45-6
EINECS 200-871-9
InChI InChI=1/CHClF2/c2-1(3)4/h1H

Physico-chemical Properties

Molecular Formula CHClF2
Molar Mass 86.4684 g/mol
Density 1.277g/cm3
Melting Point -146℃
Solubility Slightly soluble
Vapor Presure 6290mmHg at 25°C
Refractive Index 1.278

Risk and Safety

UN IDs UN 1018/1973