Preparation
3,3′-Dimethoxylbenzidine double nitriding, and 8-Chloro-1-naphthol-3,6-disulfonic acid (2 Moore) coupled.
Properties and Applications
bright blue. Soluble in water for blue purple, not soluble in alcohol. The strong sulfuric acid for green light blue, for purple diluted. The dye solution to join hydrochloric acid soluble red light purple precipitate generated; Sodium hydroxide solution to join a cherry red.
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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3-4
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1-2
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2
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2
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