9640. Trichlorofluoromethane

Nomenclature

CAS number: 75-69-4
Trichloromonofluoromethane; fluorotrichloromethane; fluorocarbon 11; FC 11; Arcton 11 (ICI); Freon 11 (DuPont); Frigen 11 (Hoechst).
CCl3F; mol wt 137.37.
C 8.74%, Cl 77.43%, F 13.83%.

Description and references

Prepn: Henne, Org. React. 2, 64 (1944). Manuf: Faith, Keyes & Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran, Eds. (Wiley-Interscience, New York, 4th ed., 1975) pp 325-330.

Properties

Liquid at temps below 23.7°. Faint ethereal odor. Nonflammable. d417.2 1.494; d25gas 5.04 (air = 1). mp 111°. bp760 23.7°; bp400 6.8°; bp200 9.1°; bp100 23.0°; bp60 32.3°; bp40 39.0°; bp20 49.7°; bp10 59.0°; bp5 67.6°; bp1.0 84.3°. Crit temp 198°; crit press. 43.2 atm (635 lb/sq inch, abs). nD18.5 1.3865. Dipole moment 0.45. Practically insol in water. Sol in alcohol, ether, other, organic solvents.

Caution

Potential symptoms of overexposure are incoordination, tremors; dermatitis; cardiac arrhythmias, cardiac arrest; asphyxia; direct contact with liquid may cause frostbite. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 146. See also Patty's Industrial Hygiene and Toxicology vol. 2B, G. D. Clayton, F. E. Clayton, Eds. (Wiley-Interscience, New York, 3rd ed., 1981) p 3073-3091. Note: Consult latest Government regulations on use as aerosol propellant.

Use

In refrigeration machinery requiring a refrigerant effective at negative pressures. As aerosol propellant.