1,1,1-Trifluoroethane

1,1,1-Trifluoroethane
Names
	Preferred IUPAC name 1,1,1-Trifluoroethane
	Other names Methylfluoroform, 1,1,1-Trifluoroform, R-143a, HFC-143a, UN 2035
Identifiers
CAS Number	420-46-2 ;
3D model (JSmol)	Interactive image;
ChemSpider	9484 ;
ECHA InfoCard	100.006.361
EC Number	206-996-5;
PubChem CID	9868;
UNII	84581C5PRN ;
UN number	2035
CompTox Dashboard (EPA)	DTXSID101336253 DTXSID9042047, DTXSID101336253 ;
	InChI InChI=1S/C2H3F3/c1-2(3,4)5/h1H3 Key: UJPMYEOUBPIPHQ-UHFFFAOYSA-N ; InChI=1/C2H3F3/c1-2(3,4)5/h1H3 Key: UJPMYEOUBPIPHQ-UHFFFAOYAD;
	SMILES FC(F)(F)C;
Properties
Chemical formula	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
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H220, H224
Precautionary statements	P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P377, P381, P403, P403+P235, P410+P403, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

1,1,1-Trifluoroethane, or R-143a or simply trifluoroethane, is a hydrofluorocarbon (HFC) compound that is a colorless gas. It should not be confused with the much more commonly used HFC gas R-134a, nor confused with the isomeric compound 1,1,2-trifluoroethane. 1,1,1-Trifluoroethane has a critical temperature of 73 °C.^[1]

Applications

Trifluoroethane is used as a refrigerant either by itself or more commonly as a component of blended mixtures. It is also used as a propellant in canned air products used to clean electronic equipment.

Environmental effects

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 lifetime of about 50 years and a global warming potential of 4300, which are at the high end compared to many other commonly used HFC refrigerants.^[3]^[4] Its abundance in the atmosphere more than doubled from about 10 parts per trillion (ppt) in 2010 to near 25 ppt in 2020.^[2]

References

^ Schoen, J. Andrew, "Listing of Refrigerants" (PDF), Andy's HVAC/R Web Page, archived from the original (PDF) on 2009-03-19, retrieved 2011-12-17
^ ^a ^b "HFC-143a". NOAA Earth System Research Laboratories/Global Monitoring Division. Retrieved 2021-02-12.
^ "Chapter 8". AR5 Climate Change 2013: The Physical Science Basis. p. 731.
^ "Refrigerants - Environmental Properties". The Engineering ToolBox. Retrieved 2016-09-12.

[Schoen-1] Schoen, J. Andrew, "Listing of Refrigerants" (PDF), Andy's HVAC/R Web Page, archived from the original (PDF) on 2009-03-19, retrieved 2011-12-17

[143a-2] "HFC-143a". NOAA Earth System Research Laboratories/Global Monitoring Division. Retrieved 2021-02-12.

[ar5-3] "Chapter 8". AR5 Climate Change 2013: The Physical Science Basis. p. 731.

[4] "Refrigerants - Environmental Properties". The Engineering ToolBox. Retrieved 2016-09-12.

[1]

[2]

[3]

[4]

Applications

Environmental effects

See also

References