FIELD: chemical technology. SUBSTANCE: succinic acid is synthesized by electrochemical reduction of maleic acid on cathode made of stainless steel at periodic regime in distilled water at current density 0.5-1.0 kA/m2 at 50-60 C. The end product is isolated by crystallization. Melting point of the end product is 186-187 C and it corresponds to requirements of pharmaceutical industry. Succinic acid is used as raw for production of pharmaceutical preparations. EFFECT: improved method of synthesis, high quality of the end product. 4 ex
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