PROCESS FOR PREPARING L-ASCORBIC ACID

L-ascorbic acid is prepared from sodium 2-keto-L-gulonate by introducing gaseous hydrogen chloride in a molar ratio to the sodium-2-keto-L-gulonate of about 1.5 - 2.0 into a mixture composed of the sodium 2-keto-L-gulonate, ethanol and acetone in a ratio of 1 : 0.25 - 1.00 : 0.5 - 2.5 by weight at a...

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Hauptverfasser:	TOKUYAMA, KANJI, IKAWA, KENJI, KIYOKAWA, MASUMI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
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