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Trichlorofluoromethane-2D.svg Trichlorofluoromethane-3D-vdW.png
CAS number 75-69-4 YesY
PubChem 6389
ChemSpider 6149 YesY
UNII 990TYB331R YesY
EC number 200-892-3
ChEBI CHEBI:48236 YesY
RTECS number TB6125000
Jmol-3D images Image 1
Image 2
Molecular formula CCl3F
Molar mass 137.37 g mol−1
Appearance Colorless liquid/gas
Density 1.494 g/cm3
Melting point −110.48 °C (−166.86 °F; 162.67 K)
Boiling point 23.77 °C (74.79 °F; 296.92 K)
Solubility in water 1.1 g/L (at 20 °C)
log P 2.53
Vapor pressure 89 kPa at 20 °C
131 kPa at 30 °C
MSDS External MSDS
EU Index Not listed
Flash point Non-flammable
Supplementary data page
Structure and
n, εr, etc.
Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon. It is a colorless, faint ethereal and sweetish odor liquid that boils at about room temperature.


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.

R-11 is assigned an ozone depletion potential of 1.0. U.S. production was ended in January 1, 1996.

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

Prior to the knowledge of the ozone depletion potential of chlorine in refrigerants and other possible harmful effects on the environment, trichlorofluoromethane was sometimes used as a cleaning/rinsing agent for low pressure systems, often dumping the used and "dirty" liquid.[citation needed]


External links[edit]