Preparation
4,4′-Diaminodiphenylether-2-sulfonic acid double nitriding, and 3-Amino-4-methylphenol(2 Moore) coupled.
Properties and Applications
dark yellow orange. Moderate soluble in water for orange brown, slightly soluble in ethanol for yellow orange. The strong sulfuric acid for dark orange brown, diluted for orange brown. The dye solution to join strong hydrochloric acid have red light 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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ISO
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3
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5
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2
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3
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4
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![Benzenesulfonic acid, 5-[(4-amino-2-hydroxy-5-methylphenyl)azo]-2-[4-[(4-amino-2-hydroxy-5-methylphenyl)azo]phenoxy]-, monosodium salt Structure](https://www.chemicalbook.com/CAS/20200119/GIF/6661-24-1.gif)