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

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 Y
PubChem	9385
ChemSpider	9016 Y
EC number	206-190-3
RTECS number	KI1108000
Jmol-3D images	Image 1
SMILES ClC(Cl)C(F)(F)F
InChI InChI=1S/C2HCl2F3/c3-1(4)2(5,6)7/h1H Y Key: OHMHBGPWCHTMQE-UHFFFAOYSA-N Y InChI=1/C2HCl2F3/c3-1(4)2(5,6)7/h1H Key: OHMHBGPWCHTMQE-UHFFFAOYAP
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
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox 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 foam blowing processes or 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.

References

1. ^ MSDS from DuPont

External links

• International Chemical Safety Card 1343
• 2,2-Dichloro-1,1,1-trifluoroethane (HCFC-123)
• IR absorption spectra