THE SYNTHESIS OF BISMUTH LACTATE
E. S. NAYDENKO1, A. S. GIRENKO2, YU. M. YUKHIN1
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: оксид висмута, молочная кислота, лактат висмута, термическое разложение, растворимость в гидроксиде аммония, bismuth oxide, lactic acid, bismuth lactate, thermal decomposition, solubility in ammonium hydroxide
Pages: 298-303
Abstract
The interaction of bismuth oxide with lactic acid solutions was studied by means of X-ray phase, chemical and thermogravimetric analyzes, IR spectroscopy and electron microscopy. The conditions for the formation of bismuth lactate of the composition BiC9H15O9 were determined, and its solubility in an ammonium hydroxide solution was investigated. Studies show that it is expedient to carry out the synthesis of bismuth lactate BiC9H15O9 through the interaction of bismuth oxide with lactic acid solution at a molar ratio of lactate ions to bismuth equal to 3.0, at the process temperature of 55±3 °C, followed by washing the product by isopropanol. When processing bismuth lactate BiC9H15O9 with an aqueous solution of ammonium hydroxide, solutions with bismuth concentration of 245-380 g/l were obtained. They can be used to produce liquid bismuth lactate containing drugs. It was established that fine crystalline bismuth oxide can be obtained as a result of the thermal decomposition of bismuth lactate.
DOI: 10.15372/CSD2019142
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