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Indigo dye is an organic compound with a distinctive blue color. Indigo is a natural dye obtained from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria. Dye-bearing Indigofera plants were once common throughout the world. It is now produced via chemical routes. Blue colorants are rare.
This dye is later mixed with human urine and left to ferment underground with the yarn for a month to produce the dyed yarn. The CTTC's Indigo Project seeks to maintain the unique strain of indigo native to South America, and serves to educate the public about the importance of natural dyes.
Natural black 1 75290 natural 517-28-2: Hofmann's Violet Dahlia Primula 42530 triarylmethane 8004-86-2: Hydroxynaphthol blue: azo 63451-35-4: Indigo: Indigo blue Vat blue 1 73000 indigoid 482-89-3: Indigo carmine (synthetic) Indigo Acid blue 74 73015 indigoid 860-22-0: Indigo carmine (natural) Natural blue 2 Food blue 1 75781 natural 860-22-0 ...
Although sometimes considered a dye, indigo is a pigment (insoluble in water). Unlike many traditional mineral-based blues, indigo is an organic compound. It was once obtained by laborious extraction from various plants. Subsequent to the discovery of synthetic dyes, such as mauvine, a chemical route was discovered to this material. In 2022 ...
Red, White, and Black Make Blue: Indigo in the Fabric of Colonial South Carolina Life (University of Georgia Press; 2013) 140 pages; scholarly study explains how the plant's popularity as a dye bound together local and transatlantic communities, slave and free, in the 18th century. Grohmann, Adolf. Färberei and Indigofabrikation in Grohmann, A ...
Indirubin is a chemical constituent of indigo naturalis (also known as qing dai 青黛), which has been used since 627 AD in traditional Chinese medicine. It is essentially the indigo dye as traditionally extracted from plants by fermentation and lime treatment. [ 1 ]