2605. Cryofluorane

Nomenclature

CAS number: 76-14-2
1,2-Dichloro-1,1,2,2-tetrafluoroethane; Freon 114 (DuPont); Frigen 114 (Hoechst); Arcton 114 (ICI).
C2Cl2F4; mol wt 170.92.
C 14.05%, Cl 41.48%, F 44.46%.
ClCF2CClF2.

Description and references

Prepn: Henne, Org. React. 2, 49 (1944).

Properties

Colorless, practically odorless, noncorrosive, nonirritating, nonflammable gas. Faint, ether-like odor in high concentrations. d0liq 1.5312. mp -94°. bp760 4.1°. nD0 1.3092. Critical temp 145.7°; crit pressure 474 lb/sq in. abs. Practically insol in water. Sol in alcohol, ether. Absorbs less than 0.0025% water. Has little, if any, anesthetic or toxic effect on humans, but toxic substances may be formed on contact with a flame or hot metal surface.

Caution

Potential symptoms of overexposure are irritation of respiratory system; asphyxia; cardiac arrhythmias, cardiac arrest; direct contact with liquid may cause frostbite. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 102. Note: Consult latest Government regulations on use as aerosol propellant.

Use

Refrigerant, aerosol propellant.