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Vat dyes are a class of dyes that are classified as such because of the method by which they are applied. Vat dyeing is a process that refers to dyeing that takes place in a bucket or vat. The original vat dye is indigo , once obtained only from plants but now often produced synthetically.
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Vat Blue 6 Blue K Vat blue 6 69825 anthraquinone 130-20-1: Vat Blue 36: Vat blue 36 73675 indigoid 6424-69-7: Vat brown 1: Vat brown 1 70802 anthraquinone 2475-33-4: Vat Green 1: Jade green base Vat green 1 59825 anthraquinone 128-58-5: Vat Green 9: Vat black BB Vat green 9 59850 anthraquinone 6369-65-9: Vat Orange 1: Vat golden yellow RK Vat ...
Morris saw dyeing of wools, silks, and cottons as the necessary preliminary to the production of woven and printed fabrics of the highest excellence; and his period of incessant work at the dye-vat (1875–76) was followed by a period during which he was absorbed in the production of textiles (1877–78), and more especially in the revival of ...
Vat dyes are essentially insoluble in water and incapable of dyeing fibres directly. However, reduction in alkaline liquor produces the water-soluble alkali metal salt of the dye. This form is often colorless, in which case it is referred to as a Leuco dye , and has an affinity for the textile fibre.
Vat dyes (14 P) Violanthrone dyes (1 P) Pages in category "Dyes" The following 90 pages are in this category, out of 90 total. This list may not reflect recent ...
The 27-member European Union (EU) recently mandated that most foods containing artificial food dyes must bear warning labels declaring that the food "may have an adverse effect on activity and ...
It was the first natural dye for which an industrial synthesis was developed as early as 1869. Anthraquinone dyes include red insect dyes derived from scale insects such as carminic acid, kermesic acid, and laccaic acids. The colorant carmine with the main component carminic acid is used, for example, as an approved food colorant E 120. [4]