Granular calcium hypochlorite coated with an inorganic salt

Details Granular calcium hypochlorite coated with an inorganic salt Granular calcium hypochlorite coated with an inorganic salt

1978-10-31

1980-05-06

Hearn, Brian E.

Chemistry of inorganic compounds

With additive

For stabilizing crystal size or shape

423268, 423274, 423474, 252 1, 252187H, 428402, 428403, 424 16, 424 33, 424 81, 424149, A61K 3320, C01B 1106

Patent

active

042017564

ABSTRACT:
A coated, rounded, solid calcium hypochlorite granule is described which is comprised of granular calcium hypochlorite encapsulated with a plurality of layers of an inorganic salt other than calcium hypochlorite. The inorganic salt is admixed with sufficient alkaline material to form a coating which has a pH in dilute aqueous solution at ambient temperature of at least about nine or higher. The inorganic salt is selected from a group consisting of the chloride, chlorate, nitrate, bromide, bromate and sulfate of an alkali metal. The alkaline material is selected from the group consisting of calcium hydroxide, strontium hydroxide, barium hydroxide, magnesium hydroxide and mixtures thereof. The inorganic salt coating comprises from about 4 to about 45 percent by weight of the calcium hypochlorite granule. The coated, rounded, solid granule of this invention is highly stable and resists chemical decomposition and dusting during storage.

REFERENCES:
patent: 3036013 (1962-05-01), Jaszka
patent: 3134641 (1964-05-01), Gleichert
patent: 3576760 (1971-04-01), Gould
patent: 3793216 (1974-02-01), Dychdala
patent: 3953354 (1976-04-01), Faust
patent: 4087360 (1978-05-01), Faust

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