FIELD: chemistry.
SUBSTANCE: method of producing complex acid salts of divalent metal dicarboxylic acids of general formula: Me(AcH)2⋅nH2O, where Me is a divalent metal atom, Ac is an anion of the dicarboxylic acid, H is hydrogen, n is 0-8, is carried out by neutralisation in an aqueous medium, with an oxide of the general formula MeO, where Me is a divalent metal atom, where high, more than 95 wt %, purity of the final product is provided by the molar concentration of the dicarboxylic acid and the divalent metal oxide in the aqueous solution in a ratio of 2.005 to 2.1:1. The synthesis is carried out in such a way that a constant, equal to the original, ratio between all components of the reaction is maintained in the reaction volume. Suitable acids are succinic, fumaric, L-aspartic, L,D-aspartic acids, and as oxides - calcium oxide, magnesium oxide, zinc oxide.
EFFECT: improved method.
7 cl, 8 ex
