Preparation
4-(4-Aminophenyl)benzenamine double nitriding, and 2-Hydroxybenzoic acid coupling, and then and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid diazo, and Benzene-1,3-diamine coupled to a product matches.
Properties and Applications
brown. Soluble in water is palm red light, soluble in alcohol. The strong sulfuric acid for purple. The dye solution to join strong hydrochloric acid for red orange solution; With strong sodium hydroxide solution have brown light orange precipitation.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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ISO
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4-5
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4-5
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2
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2-3
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3
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