1.1- Difluoro-l-chloroethane

Chloro-l, 1-dilluoroethone (1,1-Difluoro-l -chloroethane) (Genetron-142-B, Trademark of Esso Standard), CH3.CC1F3 mw 100.50 colorless, flammable gas sp gr 1.194 at —9°, fr p —130.8°, bp —9.2° insol in w. Can be prepd by chlorinating 1,1-difluoroethane in UV light. Used as solvent, aerosol proplnt refrigerant also for prepn of fluocarbon plastics... 

Difluoro-l-chloroethane (obtained from acetylene, vinylidene chloride or 1,1,1-trichloroethane) is mostly used as the starting material for the synthesis of vinylidene fluoride ... 

CH3CF2CI + 2HC1 1,1-Difluoro-l-chloroethane is then dehydrochlorinated CH3CF2CI CH2—CF2 + HQ... 

Difluoro-1-chloroethane. See 1-Chloio-l, 1-difluoroethane in this Section... 

Halogen (X2) can be removed thermally or by use of metals (Fe, Mg, Zn, Al). E.g., 1,2-dichloroethylene is obtained industrially from 1,1,2,2-tetrachloroethane by means of iron turnings and steam,140 and l,2-dichloro-l,2-difluoroethylene from l,2-difluoro-l,l,2,2-tetra-chloroethane by means of Zn dust in ethanol.342,343... 

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