| 摘要 |
A process for the purification of 1-chloro-1,2,2,2-tetrafluoroethane (F124) containing 1,2-dichlorotetrafluoroethane (F114) and/or 1,1-dichlorotetrafluoroethane (F114a). The F124 to be purified is subjected to extractive distillation, the extractant being chosen from C5-C8 aliphatic or cycloaliphatic hydrocarbons and C4-C8 perfluoroalkyl halides.
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