1,1,1-Trichloro-2,2,2-trifluoroethane

Trichlorotrifluoroethane, also called 1,1,1-Trichloro-2,2,2-trifluoroethane or CFC-113a is a chlorofluorocarbon (CFC). It has the formula Cl₃C₂F₃.

1,1,1-Trichloro-2,2,2-trifluoroethane

Names
IUPAC name 1,1,1-Trichloro-2,2,2-trifluoroethane
Other names CFC-113a Freon 113a Arcton 63 Freon-FT 1,1,1-Trichloro-2,2,2-trifluoroethane 1,1,1-Trichlorotrifluoroethane 1,1,1-Trifluoro-2,2,2-trichloroethane 1,1,1-Trifluorotrichloroethane CF3CCl3 FC 113 FC133a Precision cleaning agent TF T-WD602 Trichlorotrifluoroethane FC 113a 2,2,2-Trichloro-1,1,1-trifluoro-ethane
Identifiers
CAS Number	354-58-5
3D model (JSmol)	Interactive image
ChemSpider	9258
ECHA InfoCard	100.005.968
EC Number	206-564-6
PubChem CID	9635
UNII	07H0R79HO0
CompTox Dashboard (EPA)	DTXSID5027148
InChI InChI=1S/C2Cl3F3/c3-1(4,5)2(6,7)8 Key: BOSAWIQFTJIYIS-UHFFFAOYSA-N
SMILES FC(F)(F)C(Cl)(Cl)Cl
Properties
Chemical formula	C2Cl3F3
Molar mass	187.376 g/mol
Appearance	Colourless liquid
Density	1.579 g/mL[1][2]
Melting point	13–14 °C (55–57 °F; 286–287 K)
Boiling point	46 °C (115 °F; 319 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Environmental effects

Ozone depletion

A team of researchers at the University of East Anglia analysed unpolluted air samples from Tasmania dating from the period 1978 to 2012. They concluded that the CFC's they studied had started entering the atmosphere from anthropogenic sources in the 1960s and that while the abundance of certain CFCs had decreased, owing to the Montreal Protocol, the abundance of CFC-113a in the atmosphere was still growing.[3] Its source remained uncertain, but production of hydrofluorocarbons in East Asia was suspected by some.[4] Between 2012 and 2017, concentrations of the gas jumped by 40 percent.[5]

See also

• 1,1,2-Trichloro-1,2,2-trifluoroethane

References

1. "1,1,1-Trichlorotrifluoroethane". chemblink.com. Retrieved 10 March 2014.
2. "Material Safety Data Sheet : 1,1,1-Trichlorotrifluoroethane". fishersci.com. Archived from the original on 10 March 2014. Retrieved 10 March 2014.
3. Laube, Johannes C.; Newland, Mike J.; Hogan, Christopher; Brenninkmeijer, Carl A. M.; Fraser, Paul J.; Martinerie, Patricia; Oram, David E.; Reeves, Claire E.; Röckmann, Thomas; Schwander, Jakob; Witrant, Emmanuel; Sturges, William T. (9 March 2014). "Newly detected ozone-depleting substances in the atmosphere" (PDF). Nature Geoscience. 7 (4): 266–269. doi:10.1038/ngeo2109.
4. McGrath, Matt. "Mysterious new man-made gases pose threat to ozone layer". BBC. Retrieved 10 March 2014.
5. Adcock, Karina; Reeves, Claire; Gooch, Lauren; Leedham Elvidge, Emma; Ashfold, Matthew; Brenninkmeijer, Carl; Chou, Charles; Fraser, Paul; Langenfelds, Ray; Mohd Hanif, Norfazrin; O'Doherty, Simon; Oram, David; Ou-Yang, Chang-Feng; Phang, Siew Moi; Samah, Azizan Abu; Röckmann, Thomas; Sturges, William; Laube, Johannes (9 April 2018). "Continued increase of CFC-113a (CCl3CF3) mixing ratios in the global atmosphere: emissions, occurrence and potential sources". Atmospheric Chemistry and Physics. 18 (7): 4737–4751. doi:10.5194/acp-18-4737-2018.