FIELD: chemistry.
SUBSTANCE: method involves depositing citric acid from a nitrate solution at temperature 50-90°C and washing the obtained precipitate with water. The precipitate is dried after washing. Bismuth citrate is deposited from the nitrate solution which contains lead and silver impurities, with molar ratio of citric acid to bismuth equal to 0.90-0.99.
EFFECT: high degree of extracting citric acid into the end product and its purity.
1 tbl, 3 ex
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