Synthesis of High-Purity Bismuth(III) Tartratahydrotartrate Trihydrate
VERONIKA I. EVSEENKO, OLGA A. LOGUTENKO and YURI M. YUKHIN
Institute of Solid State Chemistry and Mechanochemistry,
Siberian Branch of the Russian Academy of Sciences,
Ul. Kutateladze 18, Novosibirsk 630128 (Russia), E-mail: yukhin@solid.nsk.su
Pages: 39-45
Abstract
Bismuth (III) tartratahydrotartrate trihydrate [Bi(C4H4O6)(C4H5O6)]. 3H2O was synthesized by the interaction of oxohydroxobismuth (III) nitrate trihydrate with the solutions of tartaric acid and investigated by means of X-ray phase analysis, thermogravimetry, electron microscopy, IR spectroscopy and chemical analysis. Expediency of obtaining high-purity bismuth (III) tartratahydrotartrate trihydrate from metal bismuth with preliminary oxidation of the latter by the oxygen of the air, dissolution of the resulting Bi2O3 in nitric acid (1 : 1) and purification of bismuth from extrinsic metals by means of its precipitation in the form of oxohydroxobismuth (III) nitrate trihydrate at pH ~ 0.9 by adding ammonium carbonate solution, followed by subsequent treatment of the formed oxohydroxobismuth (III) nitrate trihydrate with tartaric acid solution at a temperature of (20 ± 3) oC, tartrate ion to bismuth molar ratio of 2.1, and concentration of hydrogen ions 0.2
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