Chloral purification

Details Chloral purification Chloral purification

1983-10-03

1985-04-23

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4580

Patent

active

045131520

ABSTRACT:
The invention is a process for drying and purifying wet crude chloral which process comprises contacting the wet crude chloral with sulfuric acid solution in such manner that the solution in contact with the chloral has a concentration of about 50 percent or below, recovering the chloral, contacting the recovered chloral with concentrated sulfuric acid and utilizing the effluent acid recovered from the second contacting operation in first contacting of a subsequent process operation. Multistage, countercurrent flow arrangements are described. Hydrogen chloride and other acidic impurities are also substantially removed.

REFERENCES:
patent: 2443183 (1948-06-01), Cass
patent: 2478152 (1949-08-01), Cass
patent: 2584036 (1952-01-01), Mahoney et al.
patent: 2606864 (1952-08-01), Cave et al.
patent: 2616929 (1952-11-01), Rosin
patent: 2768173 (1956-10-01), Wohlers et al.

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