Trichlorofluoromethane

Trichlorofluoromethane
Chemical name	Trichlorofluoromethane
Chemical formula	CCl3F
Molecular mass	137.3681032 g/mol
CAS number	[75-69-4 ]
Density	1.49 g/cm3
Melting point	-110 °C
Boiling point	24 °C
SMILES	CF(Cl)(Cl)(Cl)
Disclaimer and references

R-11 redirects here, for the ballistic missile, see Scud.

Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is chlorofluorocarbon. It is a colorless, nearly odorless liquid that boils at about room temperature.

Time-series of atmospheric concentrations of CFC-11 (Walker et al., 2000).

Uses

It was the first widely used refrigerant. Because of its high boiling point (compared to most refrigerants), it can be used in systems with a low operating pressure, making the mechanical design of such systems less demanding than that of higher-pressure refrigerants R-12 or R-22.

Because of the high chlorine content and the ease with which the chlorine atoms can be displaced when the molecule is subject to ultraviolet light, R-11 has the highest ozone depletion potential (1.0) of any refrigerant. U.S. production was ended in 1995.

Trichlorofluoromethane is used as a reference compound for fluorine-19 NMR studies.