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Direct Blue 157

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Direct Blue 157 Basic information
Product Name:Direct Blue 157
Synonyms:Direct Blue 157;C.I.Direct Blue 157:C.I.31680
CAS:
MF:
MW:0
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Mol File:Mol File
Direct Blue 157 Structure
Direct Blue 157 Chemical Properties
Safety Information
MSDS Information
Direct Blue 157 Usage And Synthesis
Preparation2′-Methoxy-4′-amino-5′-chlorooxanilic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, and 7-Hydroxynaphthalene-2-sulfonic acid coupling, and then 2-(4-Aminophenylamino)-2-oxoacetic acid hydrolysis base, again diazo, and 4,5Dihydroxynaphthalene-1-sulfonic acid coupling.
Properties and Applicationsdark blue. Soluble in water for blue, soluble in ethanol. concentrated sulfuric acid in olive green, diluted to blue. The dye solution with strong hydrochloric acid blue precipitation; Add thick dark for sodium hydroxide solution.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 3-4 2-3 4 2-3 3-4
Tag:Direct Blue 157 Related Product Information
Direct Sky Blue FB 3,3'-[(3,3'-Dimethoxy-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis[7-amino-4-hydroxy-2-naphthalenesulfonic acid]disodium salt tetrasodium 2,2'-[[4,4'-bis[[1-hydroxy-6-[(4-methoxyphenyl)amino]-3-sulphonato-2-naphthyl]azo][1,1'-biphenyl]-3,3'-diyl]bis(oxy)]diacetate tetrasodium 5,5'-[iminobis[(1-hydroxy-3-sulphonato-6,2-naphthylene)azo(5-methoxy-2-methyl-4,1-phenylene)azo]]bis(salicylate) Acetic acid, 2,2'-[[4,4'-bis[(6-amino-5-chloro-1-hydroxy-3-sulfo-2-naphthalenyl)azo][1,1'-biphenyl]-3,3'-diyl]bis(oxy)]bis-, tetrasodium salt DIRECT BLUE 160 Direct Blue 163 tetrasodium 5,5'-[iminobis[(1-hydroxy-3-sulphonato-6,2-naphthylene)azo(2,5-dimethoxy-4,1-phenylene)azo]]bis(salicylate) C.I. Direct Blue 166
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