FIELD: industrial organic synthesis. SUBSTANCE: 1,1-difluoroethane/vinyl chloride mixture is brought into contact with at least one extractant selected from hydrocarbons, alcohols, and chlorine derivatives of hydrocarbons with boiling points from 10 to 120 C to give second mixture. From the second mixture, 1,1-difluoroethane is isolated by extractive distillation. Extractantto-1,1-difluoroethane ratio ranges from 1:1 to 10:1. Extractive distillation is carried out at pressures between 103.43 kPa and 2413.25 kPa. EFFECT: simplified purification technology. 8 cl, 1 dwg, 9 tbl, 4 ex
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