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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). (It was not until 1883 that Baeyer finally determined the structure of indigo. [28])
Indigofera suffruticosa, commonly known as Guatemalan indigo, small-leaved indigo (Sierra Leone), West Indian indigo, wild indigo, and anil, [2] is a flowering plant in the pea family, Fabaceae. Anil is native to the subtropical and tropical Americas , including the Southern United States , the Caribbean , Mexico , Central America , and South ...
The Baeyer–Drewsen indigo synthesis (1882) is an organic reaction in which indigo is prepared from 2-nitrobenzaldehyde and acetone [1] [2] The reaction was developed by von Baeyer and Viggo Drewsen in 1880 to produce the first synthetic indigo at laboratory scale. This procedure is not used at industrial scale.
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 ...
Indigofera miniata, the scarlet pea or coastal indigo, is a species of flowering plant in the family Fabaceae, native to the US states of Kansas, Oklahoma, Texas, Alabama, and Florida, and to Mexico, Guatemala, and Cuba. [2] [3] It is a prostrate perennial with stems that are about 60 cm (2 ft) long, and salmon pink flowers. [3]
A natural gas glut in the US has sent prices for the commodity tumbling to multi-decade lows, down 43% over the past year.At West Texas's key trading spot, the Waha Hub, prices have been negative ...
Indigo carmine, or 5,5′-indigodisulfonic acid sodium salt, is an organic salt derived from indigo by aromatic sulfonation, which renders the compound soluble in water. Like indigo, it produces a blue color , and is used in food and other consumables , cosmetics, and as a medical contrast agent and staining agent; it also acts as a pH indicator .
The Adams Extract building continued production in Austin, Texas, under direction of John G. Adams, Sr., from the Adams family until 2002. In that year, the company was purchased and relocated its facility to Gonzales, Texas. It is still producing a full line of spices, and of course, the Adams Best Vanilla and food colouring line.