Nauka i natura

chemicals

Direct dyes are dyes that adhere to their substrates (usually textiles) by non-ionic forces. The amount of this attraction is called substantivity: the higher the substantivity, the more attractive the dye is to the fiber. Direct dyes have a high affinity to cellulosic fibers, and the dyeing of cellulosic fibers should be performed in neutral or weakly basic media. https://www.alfa-chemistry.com/products/direct-dyes-37.htm
Dodał Tylor Keller
dyes direct

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