1,1,1-Trifluoroethane

1,1,1-Trifluoroethane, or R-143a or simply trifluoroethane, is a hydrofluorocarbon compound that is a colorless gas. It should not be confused with the much more commonly used gas R-134a or the isomeric compound 1,1,2-trifluoroethane.

1,1,1-Trifluoroethane
Names
IUPAC name
1,1,1-Trifluoroethane
Other names
Methylfluoroform, 1,1,1-Trifluoroform, R-143a, HFC-143a, UN 2035
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.006.361
EC Number
  • 206-996-5
UNII
Properties
C2H3F3
Molar mass 84.04 g/mol
Appearance Colourless gas
Density 3.7 kg/m3 (gas)
Melting point −111 °C (−168 °F; 162 K)
Boiling point −47.6 °C (−53.7 °F; 225.6 K)
Vapor pressure 11 200 hPa (20 °C)
Hazards
Extremely flammable (F+)
R-phrases (outdated) R12
S-phrases (outdated) S9, S16, S33
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

It has a critical temperature of 73 °C.

Applications

It is used as a refrigerant either by itself or more commonly as a component of blended mixtures. Unlike CFCs used as refrigerants, trifluoroethane has no chlorine atoms and therefore is not ozone-depleting. Its high chemical stability and infra-red absorbency make it a potent greenhouse gas with a global warming potential of 4300, higher than many other commonly used HFC refrigerants.[1]

Trifluoroethane is also used as a propellant in canned air products used to clean electronic equipment.

References
  1. "Refrigerants - Environmental Properties". The Engineering ToolBox. Retrieved 2016-09-12.
  1. 1,1,1,2-Tetrafluoroethane - R134A
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