METHOD OF SYNTHESIS OF FUNGICIDE COPPER OXYCHLORIDE Russian patent published in 2002 - IPC

FIELD: inorganic chemistry, chemical technology. SUBSTANCE: invention describes a method of synthesis of fungicide copper oxychloride by reaction of interaction of copper bivalent chloride acid solution in concentration of copper ions 160-170 g/l at pH = 1.05-1.15 with calcium carbonate taken in stoichiometric ratio at stirring in the presence of air oxygen and temperature 15-30 C. Before addition of calcium carbonate 7% of potassium carbonate is added of total mass of calcium carbonate. Method ensures to obtain copper oxychloride microparticles as a microdispersed form with high degree of solvation. Calcium chloride and potassium chloride as by-side products of reaction provide stability of working solution, decrease freezing point of colloidal system to 15 C and provide adherence of fungicide. EFFECT: improved method of synthesis, enhanced quality of product. 2 tbl, 7 ex