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Expired
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GB1166563A
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DEPUTY MINISTER OF MINISTERUL
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DEPUTY MINISTER OF MINISTERUL
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Publication of GB1044211ApublicationCriticalpatent/GB1044211A/en
C07C253/00—Preparation of carboxylic acid nitriles
C07C253/32—Separation; Purification; Stabilisation; Use of additives
C07C253/34—Separation; Purification
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
An aqueous solution of acrylonitrile, obtained by dissolving in water the product of the reaction between C2H2 and HCN, is purified by enriching the solution with HCN to a content of 8-20% by weight based on acrylonitrile, and distilling; e.g. in a two-part vessel such that an acrylonitrile/water azeotrope distils from the first part to the second part, where low-boiling impurities are taken off and the azeotrope is condensed, collected and re-distilled (see Division
GB1166563A1962-04-041963-03-25Method for the purification of acrylonitrile
ExpiredGB1044211A
(en)