Preparation
4-Aminobenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupling, its product to diazo, and 7-Benzamido-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
red light purple. Soluble in water for red Violet. The strong sulfuric acid for blu-ray green, blue purple after diluted precipitation. The dye solution to join strong hydrochloric acid blue precipitation; Sodium hydroxide solution to blue precipitation.
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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2-3
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4
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5
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2-3
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3
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