1,2-Dichlorotetrafluoroethane

1,2-Dichlorotetrafluoroethane
IUPAC name 1,2-Dichlorotetrafluoroethane
Other names R-114, CFC-114, halon 242, cryofluorane
Identifiers
CAS number	76-14-2 Y
ChemSpider	6189 Y
UNII	6B5VVT93AR N
EC number	200-937-7
Jmol-3D images	Image 1
SMILES ClC(F)(F)C(F)FCl
Properties
Molecular formula	C2Cl2F4
Molar mass	170.92 g/mol
Density	1.455 g/cm3
Melting point	-94 °C
Boiling point	3.5 °C
Hazards
Main hazards	Ozone depletor
N (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

1,2-Dichlorotetrafluoroethane, or R-114, is a chlorofluorocarbon (CFC) with the molecular formula ClF₂CCF₂Cl. Its primary use has been as a refrigerant. It is a non-flammable gas with a sweetish, chloroform-like odor with critical point at 145.6 °C and 3.26 MPa. When pressurized or cooled, it is a colorless liquid. It is listed on the Intergovernmental Panel on Climate Change's list of ozone depleting chemicals, and is classified as a Montreal Protocol Class I, group 1 ozone depleting substance.^[1]

When used as a refrigerant, R-114 is classified as a medium pressure refrigerant.

The US Navy uses R-114 in its centrifugal chillers in preference to R-11 to avoid air and moisture leakage into the system. While the evaporator of an R-11 charged chiller runs at a vacuum during operation, R-114 yields approximately 0 psig operating pressure in the evaporator.

References

• Material Safety Data Sheet from Honeywell International Inc., dated 22 August 2007.

1. ^ Class I Ozone-depleting Substances, United States Environmental Protection Agency, http://www.epa.gov/ozone/science/ods/classone.html, retrieved May 11, 2012