2-Aminobenzene-1,4-disulfonic acid diazo, and Naphthalen-1-amine coupling, again diazo, and?5-Amino-7-ehtoxy-2-naphthalenesulfonic acid?coupling, its product to diazo, in alkaline conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.
Properties and Applications
green light blue. Soluble in water for blue, slightly soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for blue, green for dark blue after diluted. The dye water solution is blue, join strong hydrochloric acid blue precipitation; Add thick sodium hydroxide solution for violet blue.
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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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5
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5
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5
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2
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2
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