Preparation of bismuth-modified spheroidal malachite

C - Chemistry – Metallurgy – 07 – C

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C07C 33/04 (2006.01) C07F 1/08 (2006.01)

Patent

CA 1111056

ABSTRACT OF THE DISCLOSURE Spheroidal agglomerates of malachite crystals are pre- pared by bringing together solutions of a cupric salt, a bismuth salt and an alkali metal carbonate or bicarbonate to form a mix- ture containing amorphous hydrated copper carbonate, and then holding the mixture, without agitation, at a temperature of less than about 55°C.

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