Purification of brominated organic products

Details Purification of brominated organic products Purification of brominated organic products

1978-11-30

1980-07-22

Helfin, Bernard

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

Organic compounds

Oxygen containing

260 4595G, 252 81, C07C 4112

Patent

active

042141036

ABSTRACT:
Crude halogenated organic products, especially products consisting of partially halogenated diphenyl ethers alone or in admixture with other materials may be purified by contacting the crude brominated product with a finely divided basic solid such as a carbonate or bicarbonate of an alkali metal or ammonia for a time and at a temperature sufficient to enhance the purity thereof. The purification step may be performed in the presence of an organic solvent or by adding the basic solid directly to molten crude products in the presence of a small amount of water.

REFERENCES:
patent: 2022634 (1935-11-01), Britton et al.
patent: 2076430 (1937-04-01), Hanson et al.
patent: 3192272 (1965-06-01), Asadorian
patent: 3285965 (1966-11-01), Jenkner
patent: 3366694 (1968-01-01), Thompson

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