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Other names 2,2'-Bis(2,3-dihydro-3-oxoindolyliden), Indigotin. Identifiers CAS Number. ... Indigo dye is an organic compound with a distinctive blue color.
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 ...
The chemical aniline, from which many important dyes are derived, was first synthesized from Indigofera suffruticosa (syn. Indigofera anil, whence the name aniline). In Indonesia, the Sundanese use Indigofera tinctoria (known locally as tarum or nila ) as dye for batik .
Common name Synonyms C.I. generic name C.I. number Class CAS number Acid Black 52 Acid Black 52 15711 azo 5610-64-0: Acid Blue AS Weak Acid Blue Acid Blue 25: 62055 anthraquinone: 6408-78-2: Acid fuchsin: Acid Magenta Acid Rubin Acid Violet 19 42685 triarylmethane: 3244-88-0: Acid orange 3 Acid orange 3 10385 nitro 6373-74-6: Acid orange 19 ...
The dye chemical extracted from woad is indigo, the same dye extracted from "true indigo", Indigofera tinctoria, but in a lower concentration. Following the Portuguese discovery of the sea route to India by the navigator Vasco da Gama in 1498, great amounts of indigo were imported from Asia. Laws were passed in some parts of Europe to protect ...
Common names include Chinese indigo, Japanese indigo and dyer's knotweed. [2] [3] [4] It is native to Eastern Europe and Asia. The leaves are a source of indigo dye. It was already in use in the Western Zhou period (c. 1045 BC – 771 BC), and was the most important blue dye in East Asia until the arrival of Indigofera from the south.
It was a primary supplier of indigo dye to Europe as early as the Greco-Roman era. The association of India with indigo is reflected in the Greek word for the dye, which was indikon (ινδικόν). The Romans used the term indicum, which passed into Italian dialect and eventually into English as the word indigo.
The color Persian indigo is displayed at right. Another name for this color is regimental because in the 19th century it was commonly used by many nations for navy uniforms, though it is seldom used in modern times. Persian indigo is named for an association with a product from Persia: Persian cloth dyed with indigo.
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