Preparation of bromine

Details Preparation of bromine Preparation of bromine

1975-03-06

1976-06-01

Rutledge, L. Dewayne

Chemistry of inorganic compounds

Halogen or compound thereof

Elemental halogen

260658R, C01B 700

Patent

active

039610330

ABSTRACT:
Bromine is produced by reacting chlorine and ethylene dibromide in the presence of an aluminum halide catalyst, e.g. aluminum chloride. A small amount of bromine present prior to chlorine addition shortens the induction period. Some decomposition of the organic product occurs if it is distilled in the presence of aluminum-containing residues. These residues can be removed by water wash which can be followed by drying with H.sub. 2 SO.sub. 4 . After such treatment, ethylene dichloride can be recovered by distillation without substantial decomposition.

REFERENCES:
patent: 3370096 (1968-02-01), Donaldson
patent: 3607958 (1971-09-01), Forman
Abridgement of Patent Specification 18,012; Government Printer, Israel Program For Scientific Translations.
Calingaert, G., et al.; Journal of American Chemical Society, June, 1940 pp. 1545- 1547.
Olah, G.; Friedal- Crafts and Related Reactions, vol. I., Interscience Publishers (1963) pp. 205-210, 297-298, 587-588.

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