METHOD OF MEDICINAL ASCORBIC ACID PRODUCING

FIELD: chemical technology, vitamins. SUBSTANCE: invention relates to a method of producing medicinal ascorbic acid from solution of technical ascorbic acid by multistep crystallization. Mother liquors formed at medicinal ascorbic acid crystallization are treated preliminary with sodium-containing a...

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Bibliographische Detailangaben
Hauptverfasser:	KOCHETKOVA L.I, ROEVA T.M, JASHCHENKO P.G, ZHARIKOV R.D, SERDJUK N.V, KIRSANOV A.T
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	FIELD: chemical technology, vitamins. SUBSTANCE: invention relates to a method of producing medicinal ascorbic acid from solution of technical ascorbic acid by multistep crystallization. Mother liquors formed at medicinal ascorbic acid crystallization are treated preliminary with sodium-containing alkaline compound, for example, NaOH, Na2CO3, NaHCO3, or hydrochloric acid to pH 2.2-2.4. Method ensures to decrease process time by 4-5-fold and diminish product loss by 2-3%. EFFECT: improved method of producing. 2 cl, 6 ex, 1 tbls