JPS5910747B

Crystal violet lactone is prepared by oxidizing 2-(4,4'-bis-dimethylaminobenzhydryl)-5-dimethylaminobenzoic acid in aqueous alkaline solution by means of a water-soluble ferricyanide salt or in the presence of a ferricyanide. A very pure crystal violet lactone is obtained in high yield.

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Bibliographische Detailangaben
1. Verfasser:	WARUTAA ZAIBERUTO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES HETEROCYCLIC COMPOUNDS LAKES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS ORGANIC CHEMISTRY ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS POLISHES
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Beschreibung
Zusammenfassung:	Crystal violet lactone is prepared by oxidizing 2-(4,4'-bis-dimethylaminobenzhydryl)-5-dimethylaminobenzoic acid in aqueous alkaline solution by means of a water-soluble ferricyanide salt or in the presence of a ferricyanide. A very pure crystal violet lactone is obtained in high yield.