Process for the preparation of stable copper (II) sulfate monohy

Details Process for the preparation of stable copper (II) sulfate monohy Process for the preparation of stable copper (II) sulfate monohy

1980-06-13

1982-02-16

Straub, Gary P.

Drug, bio-affecting and body treating compositions

Immunoglobulin, antiserum, antibody, or antibody fragment,...

Monoclonal antibody or fragment thereof

423557, 423267, A01N 5920, A61K 3334, C01G 310

Patent

active

043159150

ABSTRACT:
The invention relates to an improved process for the production of practically non-hygroscopic, easily grindable copper(II) sulfate monohydrate which is stable even in finely ground state and can be applied as trace element additive in animal fodders, by neutralizing the free sulfuric acid content of copper(II) sulfate pentahydrate with sodium, potassium or ammonium hydroxide, carbonate or hydrocarbonate (further on: alkaline agent) and removing four moles of its crystal water content by drying at 80.degree. to 150.degree. C. for at least 30 minutes. The improvement according to the invention consists in that copper(II) sulfate pentahydrate, melted in its own crystal water, is treated with 3 to 20% by weight, preferably 5 to 8% by weight, of an alkaline agent calculated as sodium carbonate for the weight of the copper(II) sulfate pentahydrate, over the stoichiometric amount required to neutralize the free sulfuric acid content.
By the method of the invention stabilized copper(II) sulfate monohydrate can be prepared on industrial scale directly from copper(II) sulfate pentahydrate, a cheap starting substance. The process can be performed very easily and economically.

REFERENCES:
patent: 2800424 (1957-07-01), Marshall
patent: 3025136 (1962-03-01), Hirao et al.
patent: 3404951 (1968-10-01), Tanabe et al.
patent: 3597154 (1971-08-01), Weber et al.
patent: 3661517 (1972-05-01), Bordeaux
patent: 3846545 (1974-11-01), Hess et al.
Kirk-Othmer, Encyclopedia of Chemical Technology, 2nd Edition, vol. 6, pp. 276-278, (1965).

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