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Direct Brown 190

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Direct Brown 190 Basic information
Product Name:Direct Brown 190
Synonyms:Direct Brown 190;C.I.Direct Brown 190:C.I.31750
CAS:
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MW:0
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Mol File:Mol File
Direct Brown 190 Structure
Direct Brown 190 Chemical Properties
Safety Information
MSDS Information
Direct Brown 190 Usage And Synthesis
Preparation4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid , and then in alkaline conditions 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling, product diazo again, and Resorcinol coupling.
Properties and Applicationsred light brown. Soluble in water, ethanol and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid in the dark for the light blue, diluted red brown for solution, accompanied by precipitation. The dye solution to join 10% sulfuric acid as pale blue light red jujube; Add thick sodium hydroxide solution for blue-ray purplish red color.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
AATCC 3 5 2 2 2
Direct Brown 190 Preparation Products And Raw materials
Raw materialsSalicylic acid-->6-Amino-4-hydroxy-2-naphthalenesulfonic acid-->Benzidine-->Resorcinol
Tag:Direct Brown 190 Related Product Information
Direct Brown 191 DIRECT BROWN 2 Direct Brown 179 Direct Brown 185 C.I. Direct Brown 18 Direct Brown 186 sodium 2,6-bis[(2,4-diaminophenyl)azo]toluene-4-sulphonate 5-[[4'-[[3-[(3-Carboxy-2-hydroxy-5-sulfophenyl)azo]-2,6-dihydroxyphenyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt 2-Hydroxy-5-[[4'-[[2,6-dihydroxy-3-[[2-hydroxy-5-(aminosulfonyl)phenyl]azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt