Process for purification of 1,1,1-trifluoro-2-chloroethane

Details Process for purification of 1,1,1-trifluoro-2-chloroethane Process for purification of 1,1,1-trifluoro-2-chloroethane

B - Operations, Transporting

01

D

B01D 17/02 (2006.01)

Patent

CA 2361985

The present invention is directed to a process for the purification of 1,1,1-trifluoro-2-chloroethane which comprises the steps of cooling a mixture comprising hydrogen fluoride and 1,1,1-trifluoro-2-chloroethane to a temperature below 7°C, liquid-separating the mixture into an upper liquid phase rich in hydrogen fluoride and a lower liquid phase rich in 1,1,1-trifluoro-2-chloroethane, and recovering 1,1,1-trifluoro-2-chloroethane containing a lesser amount of hydrogen fluoride from the lower liquid phase. The 1,1,1-trifluoro-2-chloroethane obtained can be used as a cooling medium and as a raw material in the preparation of 1,1,1,2-tetrafluoroethane and trifluoroethanol.

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