O-Anisidine diazo, and 4-Acetamido-5-hydroxynaphthalene-2,7-disulfonic acid coupling.
red light purple. Soluble in water for ruby red, and adequate soluble in ethanol ruby red colour. The strong sulfuric acid for purple, diluted for pink. In water solution to join strong hydrochloric acid for ruby red, add thick sodium hydroxide solution for orange brown.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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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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2
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2-3
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2
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2
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3
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AATCC
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4
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2
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2
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1
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2
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2-3
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