1,1,1-Trifluoroethane
"R-143a" redirects here. For the road, see Route 143.
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| Names | |
|---|---|
| IUPAC name
1,1,1-Trifluoroethane | |
| Other names
Methylfluoroform, 1,1,1-Trifluoroform, R-143a, HFC-143a, UN 2035 | |
| Identifiers | |
420-46-2  | |
| ChemSpider | 9484 |
| EC Number | 206-996-5 |
| Jmol interactive 3D | Image |
| PubChem | 9868 |
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| 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 | |
| EU classification (DSD) |
Extremely flammable (F+) |
| R-phrases | R12 |
| S-phrases | 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 | |
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 much more commonly used gas R-134a or the isomeric compound 1,1,2-trifluoroethane.
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 an ozone-depleting chemical, though its high chemical stability and infra-red absorbency make it a potent greenhouse gas.
Trifluoroethane is also used as a propellant in canned air products used to clean electronic equipment.
References
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