Preparation
3,5-Diamino-4-methylbenzenesulfonic acid double nitriding, and 4-Hydroxynaphthalene-1-sulfonic acid diazo, and Benzene-1,3-diamine coupled to a product (2 Moore) coupled.
Properties and Applications
brown. Soluble in water for orange brown, and adequate soluble in ethanol for yellow light brown. The strong sulfuric acid for sauce red + blue, for orange brown after diluted. The dye solution to join strong hydrochloric acid for orange brown, have precipitation; Add thick sodium hydroxide solution for orange brown.
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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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1
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4
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2
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1
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1
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![4,4'-[(2-Methyl-5-sodiosulfo-1,3-phenylene)bis[azo(4,6-diamino-3,1-phenylene)azo]]bis[naphthalene-1-sulfonic acid sodium] salt Structure](https://www.chemicalbook.com/CAS/20180808/GIF/6473-05-8.gif)