FIELD: chemistry.
SUBSTANCE: solid nitrate of bismuth basic and gallic acid with molar ratio of gallic acid to bismuth equal 1.0-1.1 are successively charged into nitric acid solution mixing. Concentration of free nitric acid in solution is 0.5-1.0 mol/l. Process of obtaining gallic acid bismuth basic is carried out at temperature 15-70°C, then obtained product is washed with water and dried.
EFFECT: simplification of process of gallic acid bismuth basic production and increase of degree of bismuth isolation into final product up to 99,9%.
1 tbl, 2 ex
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Authors
Dates
2008-11-27—Published
2007-05-04—Filed