Trichlorofluoromethane
Title: Trichlorofluoromethane
CAS Registry Number: 75-69-4
Additional Names: Trichloromonofluoromethane; fluorotrichloromethane; fluorocarbon 11; FC 11
Trademarks: Arcton 11 (ICI); Freon 11 (DuPont); Frigen 11 (Hoechst)
Molecular Formula: CCl3F
Molecular Weight: 137.37
Percent Composition: C 8.74%, Cl 77.43%, F 13.83%
Literature 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.
Melting point: mp -111°
Boiling point: 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°
Index of refraction: nD18.5 1.3865
Density: d417.2 1.494; d25gas 5.04 (air = 1)
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.

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