Preparation
4-Aminobenzenesulfonic acid diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid?coupling, and then diazo, and 4-Nitrobenzene-1,3-diamine coupling between.
Properties and Applications
bright orange. Soluble in water for orange, and adequate soluble in alcohol for golden brown to orange. The strong sulfuric acid for blue-ray in red, orange for gold after diluted. The dye solution to join strong hydrochloric acid for gold orange; With strong sodium hydroxide solution for palm light orange. Can be used for cellulose fiber dyeing. Neutral and alkaline white is good, good levelness.
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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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4
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3
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2-3
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2-3
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![7-[[4-[(2,4-Diamino-5-nitrophenyl)azo]benzoyl]amino]-4-hydroxy-3-[(4-sodiosulfophenyl)azo]naphthalene-2-sulfonic acid sodium salt Structure](https://www.chemicalbook.com/CAS/GIF/6798-02-3.gif)