Preparation
2-Amino-5-nitro-N-ethylbenzenesulfonanilide diazo, and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? ?in acid conditions coupled with the method will nitro reductive into groups,?then the azo group with acetylated amino group on the bit.
Properties and Applications
blue-ray red. Soluble in water for red, soluble in ethanol purplish red color. The strong sulfuric acid for pink, to orange diluted. In water solution to join strong hydrochloric acid for red; Add thick sodium hydroxide solution for purple.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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|
Fading
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Stain
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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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6
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3
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3
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3-4
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1
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1
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3-4
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2
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AATCC
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6
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2
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2
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2-3
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2
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2
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4
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4
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![2-Naphthalenesulfonic acid, 5-[[4-(acetylamino)-2-[(ethylphenylamino) sulfonyl]phenyl]azo]-6-amino-4-hydroxy -, monosodium salt Structure](https://www.chemicalbook.com/CAS/GIF/6360-10-7.gif)