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Research Article

Quirks of dye nomenclature. 2. Congo red

Pages 384-387 | Accepted 02 Jan 2014, Published online: 13 Feb 2014
 

Abstract

The history, origin, identity, chemistry and uses of Congo red are described. Originally patented in 1884, Congo red soon found applications in dyeing cotton, as a pH indicator for chemists and as a biological stain. Unlike the majority of the 19th century synthetic dyes, it still is available commercially.

Declaration of interest: The author report no conflicts of interest. The author alone is responsible for the content and writing of the paper.

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