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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 2
Molecular formula CCl3F
Molar mass 137.37 g/mol
Appearance Colorless liquid/gas
Density 1.494 g/cm3
Melting point

-110.48 °C

Boiling point

23.77 °C

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
EU Index Not listed
Main hazards Ozone depletor
Flash point Non-flammable
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Trichlorofluoromethane, also called freon-11, CFC-11, or R-11, is a chlorofluorocarbon. It is a colorless, nearly odorless 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.

Years ago, 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 (if cool enough) into waterways.

Table for physical properties

Property Value
Density (ρ) at 0 °C 1.5432−3
Density (ρ) at 18.82 °C 1.4905−3
Critical temperature (Tc) 198 °C (471 K)
Critical pressure (pc) 4.410 MPa (44.1 bar)
Critical density (ρc) 4.151 mol.l−1
Refractive index (n) at 20 °C, D 1.3821
Acentric factor (ω) 0.18875
Dipole moment 0.450 D
Ozone depletion potential (ODP) 1 (by definition)
Global warming potential (GWP) 4600 (CO2 = 1)

Product use

The following products use Trichloroflouromethane:

  • Fluori-Methane


Col Spray : Surface Coolant MFD. BY Cramer Products, Inc. GARDNER KANSAS U. S. A. 66030 STOCK NO. 033529

External links

  • CFC-11 NOAA/ESRL Global measurements
  • MSDS at Oxford University
  • Public health goal for trichlorofluoromethane in drinking water
  • Names at
  • Data sheet at
  • International Chemical Safety Card 0047
  • Pocket Guide to Chemical Hazards 0290
  • Phase change data at
  • Thermochemistry data at
  • ChemSub Online: Trichlorofluoromethane - CFC-11
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