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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.
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 ...
The development of new, strongly colored aniline dyes followed quickly: a range of reddish-purples, blues, violets, greens and reds became available by 1880. These dyes had great affinity for animal fibres such as wool and silk. Although some new colors tended to fade and wash out, others were identical to natural dyes, e.g., indigo dye. By the ...
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 ...
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 ]
ColorKitchen Easter Egg Coloring Kit. If you want to get in on the egg dyeing fun without the artificial ingredients, this natural plant-based egg coloring kit is for you!