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IUPAC name 1,1,1-Trifluoroethane
Other names Methylfluoroform, 1,1,1-Trifluoroform, R-143a, HFC-143a, UN 2035
CAS number 420-46-2
PubChem 9868
EINECS number 206-996-5
InChI InChI=1/C2H3F3/c1-2(3,4)5/h1H3
Molecular formula C2H3F3
Molar mass 84.04 g/mol
Appearance Colourless gas
Density 3.7 kg/m3 (gas)
Melting point

-111 °C

Boiling point

-47.6 °C

Vapor pressure 11 200 hPa (20 °C)
EU classification Extremely flammable (F+)
R-phrases R12
S-phrases S9, S16, S33
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

1,1,1-Trifluoroethane, or R-143a or simply trifluoroethane, is a fluorocarbon compound that is a clear, colorless gas. It should not be confused with the isomeric compound 1,1,2-trifluoroethane.

Additional recommended knowledge

It has a critical temperature of 73 °C.

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 is therefore not a potent ozone-depleting chemical.

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


    This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "1,1,1-Trifluoroethane". A list of authors is available in Wikipedia.
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