Process for isomerizing 1,1,2-trifluoro-1,2-dichloroethane...

Details Process for isomerizing 1,1,2-trifluoro-1,2-dichloroethane... Process for isomerizing 1,1,2-trifluoro-1,2-dichloroethane...

C - Chemistry, Metallurgy

07

C

C07C 9/08 (2006.01) C07C 17/358 (2006.01) C07C 17/24 (1990.01)

Patent

CA 2080894

1,1,2-trifluoro-1,2-dichloroethane (A123a) is isomerized to 1,1,1- trifluoro-2,2-dichloroethane (A123) by contacting it with AlF3 at temperatures ranging from 180° to 400°C. Advantageously, it is operated with mixtures of A123a and/or other chlorofluorocarbons coming from the preparation of A123 by hydrofluorination of perchloroethylene.

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