FIELD: chemical technology. SUBSTANCE: invention relates to synthesis of halide-substituted hydrocarbons, in part, to synthesis of 1,1-difluoroethane from chloroethylene and anhydrous hydrogen fluoride in liquid phase at temperature from 30 to 160 C. Catalytic system comprises tin catalyst and at least one compound taken among the group including alkaline metal halides and saturated halogenated hydrocarbons and taken in amount 0.001-5 mole/mole of tin catalyst. Tin catalyst is taken among the following group: tin halide, tin oxyhalide, organotin compound. EFFECT: high yield of end compound. 10 cl, 4 tbl, 1 dwg
