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Molecular formula : MW : CAS :
nature : molecular structure containing azo-N = N-dye. Variety is the largest, most widely applied type of a synthetic dye. According to contain azo-the number can be divided into : (a) single-azo dyes, such as acidic red G; (2) - azo dyes, such as direct red 4B; (3) Multi-azo dyes, such as direct black BN. According to the solubility can be divided into : (a) soluble dyes, referring generally dissolved in water dye; (2) insoluble azo dyes, including azoic dyes and other water-soluble dyes. Azo dyes used in a range of fiber dyeing and printing, and for leather. The paper, soap, candles, wood, straw, feathers and other staining paint, ink, plastics, rubber, food coloring. Manufacturers of dyes, including diazotization and coupling two steps.
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