Process for making 1,2-dichloroethane

Details Process for making 1,2-dichloroethane Process for making 1,2-dichloroethane

C - Chemistry, Metallurgy

07

C

260/663.2

C07C 17/02 (2006.01) C07C 17/383 (2006.01) C07C 19/045 (2006.01)

Patent

CA 1229627

PROCESS FOR MAKING 1,2-DICHLOROETHANE ABSTRACT OF THE DISCLOSURE The disclosure relates to a process for making 1,2-di- chloroethane by reacting ethylene with chlorine in a solvent at a temperature lower than the boiling point of 1,2-dichlo- roethane and between 20 - 100°C under a pressure of 1 - 15 bars in the presence of a catalyst mixture consisting of an- hydrous iron(III)chloride and a nitrogen base or a salt of said base and, optionally an inhibitor reducing the forma- tion of by-products, and distillatively separating the 1,2- dichloroethane from the chlorination mixture. To this end, the disclosure provides for the chlorination mixture to be introduced into a distilling column, for the 1,2-dichloro- ethane to be distilled off at most until catalyst commences separating, and for a portion of the remaining liquid still product to be recycled into the reaction zone for further reaction of ethylene with chlorine.

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