Preparation
2,5-Dichlorobenzenamine diazo, and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid?in acid conditions coupled, then and diazo of 5-Chloro-2-phenoxybenzenamine in alkaline conditions coupled.
Properties and Applications
dark green light blue. Soluble in water, slightly soluble in ethanol to blue. The strong sulfuric acid for dark blue-green, diluted to blue. Join strong hydrochloric acid in aqueous solution for green light blue; Add sodium hydroxide to blue.
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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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4-5
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3-4
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2-3
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3
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3-4
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2-3
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3-4
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3-4
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![4-Amino-3-[(2,5-dichlorophenyl)azo]-5-hydroxy-6-[(5-chloro-2-phenoxyphenyl)azo]naphthalene-2,7-disulfonic acid disodium salt Structure](https://www.chemicalbook.com/CAS/GIF/5850-33-9.gif)