Preparation
O-Methylaniline diazo, and 2-(4-Aminophenyl)-6-hydroxynaphtho[2,1-d]thiazole-8-sulfonic acid?coupling.
Properties and Applications
blue-ray red. Soluble in water for big red, soluble in ethanol is palm light orange. The strong sulfuric acid for product red, diluted becomes shallow. The dye solution to join strong hydrochloric acid have article red precipitate; Add thick sodium hydroxide solution have orange brown 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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3
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5
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1
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2-3
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3
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![Naphtho[2,1-d]thiazole-8-sulfonic acid, 2-(4-aminophenyl)-6-hydroxy-7-[(2-methylphenyl)azo]-, monosodium salt Structure](https://www.chemicalbook.com/CAS/20200331/GIF/6404-55-3.gif)