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Biebrich scarlet is a molecule used in Lillie's trichrome. It is an anionic mono-azo dye, which is an important pigmenting agent in the textile and paper industries, used to color wool, silk, cotton, and papers. The dye was created in 1878 by the German chemist Rudolf Nietzki. He was employed by Kalle & Co. and completed his contributions on August of 1880, where he claimed to be the inventor of Biebrich scarlet. The name, Biebrich scarlet, originated from the location where a company, Kalle & Co., marketed the dye in Biebrich (Wiesbaden).
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