Preparation
2-Amino-4-chlorophenol diazotization, in alkaline condition and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling.
Properties and Applications
dark blue light green. Soluble in water for Plum red. In concentrated sulfuric acid to red light blue, dilution after Plum red; In 10% sodium hydroxide solution for red light purple. Dye aqueous solution to join hydrochloric acid have brown light red precipitation.
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Standard
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Ironing Fastness
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Water
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Alkali
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Acid
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ISO
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5
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3-4
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4
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5
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4-5
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5
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