Title:
MANUFACTURE OF AMINOETHANESULFONIC ACID
Document Type and Number:
Japanese Patent JPS6144188
Kind Code:
A
Abstract:
PURPOSE:To obtain aminoethanesulfonic acid by reacting chloroethylamine hydrochloride with sodium sulfite and treating the liq. reaction product in an electrodialytic bath provided with combined anion and cation exchange membranes to separate effectively aminoethanesulfonic acid from the reaction product. CONSTITUTION:An electrodialytic bath 1 is divided into plural desalted soln. chambers 2 and concd. soln. chambers 3 by alternately stretching cation exchange membranes C and anion exchange membranes A. A soln. 6 of aminoethanesulfonic acid contg. inorg. impurities produced by reacting chloroethylamine hydrochloride with sodium sulfite is fed to the chambers 2, an electrolyte soln. 7 is fed to the chambers 3, and DC is supplied between electrodes 4, 5. The impurities move to the chambers 3, and a concd. and desalted soln. 8 of aminoethanesulfonic acid almost free from impurities is obtd. in the chambers 2. Conditions during electrodialysis include <=about 60 deg.C temp. of the solns. and about 4.5A/dm<2> current density.
Inventors:
ARAI KENICHI
IWASAKI KOZO
TAKAHARA MASARU
NAKAMURA HIDEO
IWASAKI KOZO
TAKAHARA MASARU
NAKAMURA HIDEO
Application Number:
JP16489384A
Publication Date:
March 03, 1986
Filing Date:
August 08, 1984
Export Citation:
Assignee:
MITSUI TOATSU CHEMICALS
International Classes:
C25B3/00; B01D61/44; C07C67/00; C07C301/00; C07C303/02; C07C309/14; (IPC1-7): B01D13/02; C07C143/56; C25B3/00