| 摘要 |
Manufacture of 1,1,1,2-tetrafluorethane by reacting 1,1,1-trifluoro-2-chloroethane with hydrogen fluoride in the presence of a chromium oxide catalyst and reducing the 1,1-difluoro-2-chloroethylene content of the impure 1,1,1,2-tetrafluoroethane product by intimately contacting the impure product with an aqueous solution of a metal permanganate.
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