Preparation
2-Amino-3,5-dimethylbenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupling, product to diazo, and 6-(3-Carboxy-4-hydroxyanilino)-1-naphthol-3-sulfonic acid?coupling.
Properties and Applications
red light blue. For the red light purple is soluble in water, soluble in alcohol. The strong sulfuric acid for blue-ray green, diluted to blue. The dye solution to join strong hydrochloric acid have precipitation of dark; Add thick sodium hydroxide solution has the purple 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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4-5
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4
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1-2
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2
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