Preparation
4-(4-Aminophenyl)-3-nitro-aniline double nitrogen, first and 2-Hydroxybenzoic acid?coupling, again with 4-Hydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applications
dark yellow red. Soluble in water for red, slightly soluble in alcohol for red orange. In concentrated sulfuric acid for sauce red, after dilution for cloudy pink. Dye aqueous solution to join concentrated hydrochloric acid for shallow red; Join concentrated sodium hydroxide solution for orange brown.
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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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Dry 5,wet 4-5
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4
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3-4
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4-5
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3-4
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