mindyhausler
10 posts
Jun 19, 2025
6:46 PM
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Dyes are colored organic compounds that can color fibers and other materials. However, not all colored organic compounds can be used as dyes. Generally, to be used as a dye, the organic compounds need to have the following four conditions: (1) it must be able to dye a certain concentration of color; (2) It needs to have a certain binding force with the substrate; (3) It must be able to dissolve directly in water or to dissolve in water by chemical action; (4) The color it dyes on the substrate needs to have a certain durability and is not easy to fade or discolor. Dyes can be divided into two categories of natural dyes and synthetic dyes. The most natural dyes are derived from roots, berries, bark, leaves, wood, fungi and lichens. Synthetic dyes are produced from various chemicals and the great majority of dyes are obtained in this way because of their superior cost, optical properties, and resilience. And since 1856, the first synthetic dye, mauve, was discovered, many thousands of synthetic dyes have been prepared. At present, there are more than 7000 kinds of dyes produced in the world, and there are more than 2000 kinds of commonly used dyes. They are widely used in people's daily life, making the world colorful.
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