METHOD FOR SEPARATING N,O-DIALKYLHYDROXYLAMINE HYDROCHLORIDE

Title:

METHOD FOR SEPARATING N,O-DIALKYLHYDROXYLAMINE HYDROCHLORIDE

Document Type and Number:

Japanese Patent JPH06135918

Kind Code:

A

Abstract:

PURPOSE: To facilitate the removal of water or an aqueous solution of hydrochloric acid which has been difficult to separate according to a conventional separating method and enable the recovery of a solvent used as an azeotropic removing agent or a solvent added for crystallizing, recrystallizing or reslurrying at a high recovery ratio.

CONSTITUTION: This method for separating an N,O-dialkylhydroxylamine hydrochloride is characterized by (1) adding benzene or an alkyl group-substituted benzene to an aqueous solution containing the N,O-dialkylhydroxylamine hydrochloride, removing water or an aqueous solution of the hydrochloric acid by the azeotropy and then (2) adding an alcohol and obtaining the N,O- dialkylhydroxylamine hydrochloride as a crystal.

Inventors:

INOKI SATORU
TAKEI MITSUSACHI
KIHARA NORIAKI

Application Number:

JP28628392A

Publication Date:

May 17, 1994

Filing Date:

October 23, 1992

Export Citation:

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Assignee:

MITSUI PETROCHEMICAL IND

International Classes:

C07C239/08; C07C239/20; (IPC1-7): C07C239/20; C07C239/08

Attorney, Agent or Firm:

Yusuke Hiraki (2 outside)

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