Title:
PURIFICATION OF ACETONITRILE
Document Type and Number:
Japanese Patent JPH05140070
Kind Code:
A
Abstract:
PURPOSE: To obtain acetonitrile having high purity to be usable as a solvent for liquid chromatography and free from absorption of ultraviolet ray within a prescribed wavelength range in high efficiency by treating a specific by- produced crude acetonitrile under specific condition and distilling the treated product.
CONSTITUTION: Crude acetonitrile produced as a by-product of the ammoxidation reaction of propylene, isobutylene or t-butyl alcohol in the presence of a catalyst is brought into contact with an ozone-containing gas, treated with a basic anion exchange resin and distilled to obtain purified acetonitrile free from absorption of ultraviolet ray within the wavelength range of 200-350nm.
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Inventors:
KURIHARA SHIGERU
NAKAMURA SHIGEO
NAKAMURA SHIGEO
Application Number:
JP29755391A
Publication Date:
June 08, 1993
Filing Date:
November 14, 1991
Export Citation:
Assignee:
ASAHI CHEMICAL IND
International Classes:
C07C253/26; C07C253/34; C07C255/03; (IPC1-7): C07C253/26; C07C253/34; C07C255/03
Previous Patent: JPS5140069
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