Preparation
2-(2-Amino-5-nitrophenoxy)acetic acid diazo, and 4-Hydroxy-7-(4-methoxyphenylamino)naphthalene-2-sulfonic acid?coupling, and then will the nitro reduction, again will get the amino nitrogen compounds for light accidentally gasification.
Properties and Applications
blue purple to red light blue. Soluble in water for purple, slightly soluble in alcohol. The strong sulfuric acid for purple, diluted for colourful purple. The dye solution to join strong hydrochloric acid for blue; Add thick sodium hydroxide solution for purplish red color.
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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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2-3
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2-3
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6
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4
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4-5
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![Acetic acid, 2,2'-[carbonylbis[imino[6-[[1-hydroxy-6-[(4-methoxyphenyl)amino]-3-sulfo-2-naphthalenyl]azo]-3,1-phenylene]oxy]]bis-, tetrasodium salt Structure](https://www.chemicalbook.com/CAS/20200331/GIF/6858-97-5.gif)