2,2-Dichloro-1,1,1-trifluoroethane

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2,2-Dichloro-1,1,1-trifluoroethane^[1]

IUPAC name	2,2-Dichloro-1,1,1-trifluoroethane
Other names	1,1,1-Trifluoro-2,2-dichloroethane, Dichlorotrifluoromethylmethane, Dichlorotrifluoroethane, Freon 123, HCFC-123, R 123
Identifiers
CAS number	[306-83-2]
PubChem	9385
EINECS number	206-190-3
RTECS number	KI1108000
SMILES	ClC(Cl)CF(F)(F)
InChI	1/C2HCl2F3/c3-1(4)2(5,6)7/h1H
Properties
Molecular formula	C₂HCl₂F₃
Molar mass	152.93 g/mol
Appearance	Colorless liquid
Density	1.46 g/cm³
Melting point	-107 °C
Boiling point	27.6 °C
Solubility in water	0.39%
Vapor pressure	89.3 kPa
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

2,2-Dichloro-1,1,1-trifluoroethane or HCFC-123 is considered as an alternative to CFC-11 in low pressure refrigeration/HVAC systems, and should not be used in firefighting, foam blowing processes, and solvent applications.

Its ozone depletion potential is ODP = 0.012, and global warming potential is GWP = 76. HCFC-123 will eventually be phased out under the current schedule of the Montreal Protocol, but can continue to be used in new HVAC equipment until 2020 in developed countries, and will still be produced for service use of HVAC equipment until 2030. Developing countries can use in new equipment until 2030, and can be produced for use in service until 2040.

HCFC-123 is used in large tonnage centrifugal chiller applications, and is the most efficient refrigerant currently in use in the marketplace for HVAC applications.

Storage tanks carrying HCFC-123 should be a light grey.

Isomers are 1,2-dichloro-1,1,2-trifluoroethane (R-123a) with CAS 354-23-4 and 1,1-dichloro-1,2,2-trifluoroethane (R-123b) with CAS 812-04-4.