Preparation
O-Anisidine diazo, and 2-(3-Aminophenyl)-6-hydroxynaphtho[2,1-d]thiazole-8-sulfonic acid coupling, its product to diazo, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-1,3-disulfonic acid coupling.
Properties and Applications
blue-ray red. Soluble in water for product red, and adequate soluble in alcohol for red wine. The strong sulfuric acid for red purple, diluted for red jade. The dye solution with strong hydrochloric acid wine red precipitate; Add thick sodium hydroxide solution have red precipitate.
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
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4
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2
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1
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1
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