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Production of Indigo dye in a BASF plant (1890) In 1865 the German chemist Adolf von Baeyer began working on the synthesis of indigo. He described his first synthesis of indigo in 1878 (from isatin ) and a second synthesis in 1880 (from 2-nitrobenzaldehyde ).
Indigofera galegoides is a species of flowering plant in the family Fabaceae, native to India, South East Asia, Malesia, and southern China. [1] It is a shrub usually 2 m (6 ft) high and indigo dye may be extracted from it by the same harvesting and processing methods as Indigofera tinctoria. [2] It grows in open places and valleys. [3]
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 ...
Saxon blue or Saxony blue is an 18th century dye made from a solution of indigo in concentrated sulfuric acid. Saxon green Saxon green or Saxony green is a bright green dye of the 18th century produced using indigo and fustic. substantive Substantive dyes are dyes that produce color without the use of a mordant. [2] Examples include indigo dye ...
Blue colorants around the world were derived from indigo dye-bearing plants, primarily those in the genus Indigofera, which are native to the tropics. The primary commercial indigo species in Asia was true indigo (Indigofera tinctoria). India is believed to be the oldest center of indigo dyeing in the Old World. It was a primary supplier of ...
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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.