Preparation
3-Aminobenzenesulfonic acid diazo, and a coupling m-Toluidine
, its product to diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.
Properties and Applications
red to blue light Claret. For bright red is soluble in water, soluble in ethanol for product red. The strong sulfuric acid in blue, diluted red for brown. The dye solution to join strong hydrochloric acid for red light brown; Add thick sodium hydroxide solution for purplish red color, have precipitation
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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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4
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4
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3
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4
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4
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AATCC
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5
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5
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3
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2-3
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3
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![disodium 7-[(4-aminobenzoyl)amino]-4-hydroxy-3-[[3-methyl-4-[(3-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate Structure](https://www.chemicalbook.com/CAS/GIF/5979-32-8.gif)