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Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
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Filing date
Publication date
Application filed by Sumitomo Chemical Co LtdfiledCriticalSumitomo Chemical Co Ltd
Priority to JP14780975ApriorityCriticalpatent/JPS5271453A/en
Publication of JPS5271453ApublicationCriticalpatent/JPS5271453A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
PURPOSE: Na salt of title compound useful as an azo dye intermediate is collected in good yield as easy-to filter crystals by the special treatment of the sulfonation reaction mixture.
COPYRIGHT: (C)1977,JPO&Japio
JP14780975A1975-12-101975-12-10Crystallization of naphthalene-1,3,6-trisulfonic acid
PendingJPS5271453A
(en)