FIELD: chemical industry. SUBSTANCE: 1,1,2-trifluoro- 1,2-dichloroethane A113a is isomerized into 1,1,1- trifluoro-2,2-dichloroethane by reacting it with AlF3 at temperatures from 180 to 400 C. This method is intended preferably for mixtures A123a with A123 and/or other chlorine and fluorine containing hydrocarbons which result from producing A123 by addition or hydrogen fluoride to perchlorothylene. EFFECT: more efficient isomerization method. 5 cl, 7 tbl
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Year |
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Number |
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1993 |
|
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