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

From Wikipedia, the free encyclopedia
Jump to: navigation, search
2,2-Dichloro-1,1,1-trifluoroethane[1]
Dichlorotrifluoroethane.png
Identifiers
CAS number 306-83-2 YesY
PubChem 9385
ChemSpider 9016 YesY
EC number 206-190-3
RTECS number KI1108000
Jmol-3D images Image 1
Properties
Molecular formula C2HCl2F3
Molar mass 152.93 g/mol
Appearance Colorless liquid
Density 1.4638 g/cm3
Melting point −107 °C (−161 °F; 166 K)
Boiling point 27.82 °C (82.08 °F; 300.97 K)
Solubility in water 0.39%
Vapor pressure 89.3 kPa
Refractive index (nD) 1.3392
Hazards
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY (verify) (what is: YesY/N?)
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.

HCFC-123 is also used as a testing agent for bypass leakage of carbon adsorbers in gas filtration systems.

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[edit]

  1. ^ MSDS from DuPont

External links[edit]