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Title:
PRODUCTION OF CHLORANIL
Document Type and Number:
Japanese Patent JPH05255174
Kind Code:
A
Abstract:

PURPOSE: To produce chloranil having low residual chlorine ion content under mild condition with simple operation.

CONSTITUTION: Hydroquinone is made to react with chlorine in a mixed solvent consisting of water or hydrochloric acid and an organic solvent incompatible therewith. After separating the hydrochloric acid phase, the organic solvent incompatible with water or hydrochloric acid and containing dispersed chloranil is made to contact with an alkaline aqueous solution having pH of >7 and ≤10, e.g. an aqueous solution of sodium bicarbonate.


Inventors:
Iwasaki, Fumiaki
Doi, Hiroyuki
Application Number:
JP1992000055192
Publication Date:
October 05, 1993
Filing Date:
March 13, 1992
Export Citation:
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Assignee:
TOKUYAMA SODA CO LTD
International Classes:
C07C46/06; C07C46/10; C07C50/24; (IPC1-7): C07C50/24; C07C46/06; C07C46/10