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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 .
Wrightia tinctoria, Pala indigo plant or dyer's oleander, [1] is a flowering plant species in the genus Wrightia found in India, southeast Asia and Australia. It is ...
In contemporary hairstyling, texture powder is widely used to create volume and body in both men's and women's hairstyles.Unlike the heavier powders of the past, modern formulations are much lighter and are designed to be virtually invisible in the hair. [5]
True indigo is a shrub 1–2 metres (3 ft 3 in – 6 ft 7 in) high. It may be an annual, biennial, or perennial, depending on the climate in which it is grown. It has light green pinnate leaves and sheafs of pink or violet flowers. The rotenoids deguelin, dehydrodeguelin, rotenol, rotenone, tephrosin and sumatrol can be found in I. tinctoria. [3]
In a reactive dye, a chromophore (an atom or group whose presence is responsible for the colour of a compound) contains a substituent that reacts with the substrate. Reactive dyes have good fastness properties owing to the covalent bonding that occurs during dyeing.
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 .
Lactarius indigo, commonly known as the indigo milk cap, indigo milky, indigo lactarius, blue lactarius, or blue milk mushroom, is a species of agaric fungus in the family Russulaceae. The fruit body color ranges from dark blue in fresh specimens to pale blue-gray in older ones.
Indigo dye – Indigo, a blue pigment and a dye, was used in India, which was also the earliest major centre for its production and processing. [2] The Indigofera tinctoria variety of Indigo was domesticated in India. [2] Indigo, used as a dye, made its way to the Greeks and the Romans via various trade routes, and was valued as a luxury ...
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