| abstract |
(57) [Abstract] [Objective] A high-boiling halogenated hydrocarbon produced as a by-product in the reaction of producing 1,1-dichloro-1-fluoroethane by reacting 1,1,1-trichloroethane with hydrogen fluoride. Efficiently separates from hydrogen fluoride and makes hydrogen fluoride reusable. [Structure] 1,1-dichloro-1-fluoroethane (1 (Abbreviated as 41b) is added and distilled. Hydrogen fluoride is distilled off as a mixture with 141b, leaving the high-boiling halogenated hydrocarbons. The mixture is phase separated to separate a 141b-rich phase and a hydrogen fluoride-rich phase. |