1,2-Dichlorotetrafluoroethane

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1,2-Dichlorotetrafluoroethane
IUPAC name

1,2-Dichlorotetrafluoroethane

Other names

R-114, CFC-114, halon 242, cryofluorane

Identifiers
CAS number 76-14-2 YesY
ChemSpider 6189 YesY
UNII 6B5VVT93AR N
EC number 200-937-7
Jmol-3D images Image 1
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: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 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 the critical point occurring 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

  1. ↑ Class I Ozone-depleting Substances, United States Environmental Protection Agency, retrieved May 11, 2012 

External links

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