who used indian indigo for textile printing
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Answer:
Indigo dye is an organic compound with a distinctive blue color. Historically, indigo was a natural dye extracted from the leaves of some plants of the Indigofera genus, in particular Indigofera tinctoria; dye wielding Indigofera plants were commonly grown and used throughout the world, in Asia in particular, as an important crop, with the production of indigo dyestuff economically important due to the previous rarity of some blue dyestuffs historically.
The primary use for indigo is as a dye for cotton yarn, mainly used in the production of denim cloth suitable for blue jeans; on average, a pair of blue jeans requires just 3 grams (0.11 oz) - 12 grams (0.42 oz) of dye to produce. Smaller quantities are used in the dyeing of wool and silk.
Indigo carmine, also known as indigo, is an indigo derivative which is also used as a colorant. About 20 thousand tons are produced annually, again mainly for the production of blue jeans. It is also used as a food colorant, and is listed in the United States as FD&C Blue No. 2.
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