Preparation
2-Amino-4,6-dinitrophenol diazotization, and 6-Hydroxynaphthalene-2-sulfonic acid coupling, with Sodium sulfide product will be one of the nitro reduction.
Properties and Applications
dark red light brown. Soluble in water for blue light red, slightly soluble in ethanol, Acetone and Cellosolve. In concentrated sulfuric acid for pink to red, dilution have orange precipitation; In concentrated nitric acid for pink, and then into orange. Dye aqueous solution to join concentrated hydrochloric acid for pink solution; Add 10% oxygen sodium oxide solution to red.
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Standard
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Ironing Fastness
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Water
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Alkali
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Acid
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AATCC
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5
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7
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4-5
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5
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5
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