Preparation
N-(3-aminophenyl)formamide diazo, first in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling, hydrolysis amino acylation, product to double nitriding, and Benzene-1,3-diamine (2 Moore) coupled.
Properties and Applications
Dark red light brown. Soluble in water, soluble in ethanol right amount for red light brown. The strong sulfuric acid is palm in light red to red sauce, diluted for brown. The dye solution to join strong hydrochloric acid with brown precipitation; Add thick sodium hydroxide solution for red light 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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AATCC
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3-4
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5
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3
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3
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3
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![2-Naphthalenesulfonic acid, 6-[(2,4-diaminophenyl)azo]-3-[[3-[(2,4-diaminophenyl)azo]phenyl]azo]-4-hydroxy-, monosodium salt Structure](https://www.chemicalbook.com/CAS/20200331/GIF/6428-45-1.gif)