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Indigo, space-filling. Indigo dye is a dark blue crystalline powder that sublimes at 390–392 °C (734–738 °F). It is insoluble in water, alcohol, or ether, but soluble in DMSO, chloroform, nitrobenzene, and concentrated sulfuric acid. The chemical formula of indigo is C 16 H 10 N 2 O 2 .
- C₁₆H₁₀N₂O₂
- 262.27 g/mol
- 390 to 392 °C (734 to 738 °F; 663 to 665 K)
- 990 µg/L (at 25 °C)
indigo, (genus Indigofera ), large genus of more than 750 species of shrubs, trees, and herbs in the pea family ( Fabaceae ). Some species, particularly true indigo ( Indigofera tinctoria) and Natal indigo ( I. arrecta ), were once an important source of indigo dye. The cultivation of indigo plants and the extraction of the dyestuff were an ...
- The Editors of Encyclopaedia Britannica
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May 13, 2023 · This property makes indigo dye one of the few natural dye sources of a stable blue color. Today, indigo dye is still widely used in the textile and fashion industries, as well as in art and design.
Indigo is a pigment extracted from the leaves of indigo-bearing plants and is the oldest natural source of blue dye in the world. Humans have used indigo to dye natural fibers for thousands of years, with traditions spanning continents and cultures. Indigo dye was common in ancient civilizations in Mesopotamia, Egypt, Britain, Mesoamerica, Peru ...
The ridges of the mortar in between the bricks emit a blue hue, the color of the ocean: indigo, a name that refers to the shrub, the dye the plant produces and the color itself.
- Latria Graham
Nov 1, 2022 · Since ancient times, indigo has been one of the most widely used natural pigments for textile dyeing. In Europe, the only source of indigo dye was from woad ( Isatis tinctoria ). Woad leaves were processed to obtain an insoluble indigo pigment, which had to be reduced to leuco-indigo to dye textiles. Today, most indigo comes from the chemical ...
Oct 11, 2020 · Indigo, the bewitching blue dye is extracted from the Indigofera plants- a family of roughly 750 shrub species found in tropical and sub- tropical regions of the world. The word indigo traces its origins from the Greek word indikon which translates to ‘Indian’, indicating India to be a prominent source of indigo for the Greeks. However, it ...
