ClCl.[C:3]([F:7])([F:6])(Cl)Cl.[CH:8]([C:11]([F:14])([F:13])Cl)([F:10])[F:9].[C:15]([C:19]([F:22])([F:21])Cl)([F:18])([F:17])[Cl:16].[C:23]([C:27]([F:30])([F:29])[F:28])([F:26])([F:25])Cl>>[CH2:3]([F:7])[F:6].[CH:8]([CH:11]([F:14])[F:13])([F:10])[F:9].[CH:19]([C:15]([F:18])([F:17])[Cl:16])([F:22])[F:21].[CH:23]([C:27]([F:30])([F:29])[F:28])([F:26])[F:25]Hydrodechlorination of the chlorine-containing saturated impurities CHClF2, CCl2F2, CHClFCF3, CHF2CClF2, CCl2FCF3, CClF2CClF2, and CClF2CF3 having boiling points of -40.8° C., -29.8° C., -12° C., -10.2° C., 3.0° C., 3.6° C., and -38.7° C., respectively, gives CH2F2, CHClF2, CH2FCF3, CHF2CHF2, CHClFCF3, CHF2CClF2, and CHF2CF3 having boiling points of -51.7° C., -40.8° C., -26.5° C., -19.7° C., -12° C., -10.2° C., and -48.5° C., respectively. Further hydrodefluorination of CH2F2 and CH2FCF3 would give CH3F (HFC-41) and CH3CF3 (HFC-143a) boiling at -78.5° C. and -47.6° C., respectively.
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