METHOD FOR PURIFYING TAURINE - MITSUI TOATSU CHEMICALS

Title:

METHOD FOR PURIFYING TAURINE

Document Type and Number:

Japanese Patent JPH06192209

Kind Code:

A

Abstract:

PURPOSE: To separate or remove impurities and obtain high-purity taurine having wide uses as a medicine such as a therapeutic agent for hepatopathy, an antidote or an anticonvulsant agent or a food additive in high yield simply by treating the taurine in an alcoholic solution.

CONSTITUTION: Crude taurine (2-aminoethylsulfonic acid) obtained especially by a method for reacting 2-chloroethylamine hydrochloride with sodium sulfite, etc., is treated in an alcoholic solution to separate or remove impurities. Methanol and ethanol are preferred as the alcohol to be used. The final concentration of the alcohol in carrying out this treatment is ≥20wt.%, preferably ≥35wt.%. The crystallization temperature is preferably ≤10°C.

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Inventors:

ITO KIYOSHI
URA DAISUKE
YANAKA MAKOTO
FUKUHARA NOBUHIRO

Application Number:

JP34633192A

Publication Date:

July 12, 1994

Filing Date:

December 25, 1992

Export Citation:

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Assignee:

MITSUI TOATSU CHEMICALS

International Classes:

C07C303/44; C07C309/14; (IPC1-7): C07C309/14; C07C303/44

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