Process for preparing calcium pyruvate and its hydrates

Details Process for preparing calcium pyruvate and its hydrates Process for preparing calcium pyruvate and its hydrates

1997-03-11

1998-03-03

Geist, Gary

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

Organic compounds

Carboxylic acids and salts thereof

C07C 5919

Patent

active

057236615

ABSTRACT:
A process for preparing high-purity calcium pyruvate or its hydrates by reacting an aqueous solution of pyruvic acid with an inorganic calcium compound with the pH being set to 2 to 7, preferably 2.5 to 4, which comprises reacting an up to 10% strength aqueous solution of pyruvic acid with the calcium compound, in the presence or absence of a stabilizer or complexing agent, and mixing the resulting solution with an organic diluent at temperatures of 0.degree. to 30.degree. C. and isolating the resulting precipitate of calcium pyruvate or its hydrate from the solution.

REFERENCES:
patent: 4076745 (1978-02-01), Lodewyk

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