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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.
Vat dyes are a class of dyes that are classified as such because of the method by which they are applied. Vat dyeing is a process that refers to dyeing that takes place in a bucket or vat. The original vat dye is indigo , once obtained only from plants but now often produced synthetically.
In medieval Europe, purple, violet, murrey and similar colors were produced by dyeing wool with woad or indigo in the fleece and then piece-dyeing the woven cloth with red dyes, either the common madder or the luxury dyes kermes and cochineal. Madder could also produce purples when used with alum.
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 ...
The thread is lifted now and again on the end of a stick, and again plunged in until it is all thoroughly dyed. If blue, the thread is then washed in salt water, but any other colour uses fresh water. Amateurs may wish to experiment with some of the suggestions, as urine (human or animal) is used in many recipes as a mordant. A number of the ...
Indigo dye production. Pages in category "Indigo dye production" The following 18 pages are in this category, out of 18 total. This list may not reflect recent ...
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Añil (Indigofera suffruticosa) is an indigo dye-bearing plant of Central and South America. [5] [6] aniline Aniline dyes or basic dyes are a class of synthetic dyes derived from coal tar, first discovered in the 19th century. These dyes produce brilliant colors that work well with animal fibers, especially silk. Because of poor colorfastness ...