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Direct Brown 57

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Direct Brown 57 Basic information
Product Name:Direct Brown 57
Synonyms:Direct Brown 57;C.I.Direct Brown 57:C.I.31705
CAS:
MF:
MW:0
EINECS:
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Mol File:Mol File
Direct Brown 57 Structure
Direct Brown 57 Chemical Properties
Safety Information
MSDS Information
Direct Brown 57 Usage And Synthesis
Preparation4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling, its product to diazo, and Benzene-1,3-diamine coupling.
Properties and Applicationsdark red light brown. Soluble in water for dark red light brown, soluble in ethanol and soluble fiber element, slightly soluble in acetone, insoluble in other organic solvents. The strong sulfuric acid as dark blue light in purple, dilute red after brown precipitation; In 10% of sulfuric acid for blue-ray gray. The dye solution to join 10% sodium hydroxide solution for purplish red color.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4 4 1 1-2 2
AATCC 5 5 2 2 2
Direct Brown 57 Preparation Products And Raw materials
Raw materialsSalicylic acid-->6-Amino-4-hydroxy-2-naphthalenesulfonic acid-->Benzidine-->m-Phenylenediamine
Tag:Direct Brown 57 Related Product Information
6-Amino-4-hydroxy-3-[[4'-[(2,4-diaminophenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2-sulfonic acid sodium salt disodium 5-[[4'-[[4-[(4-hydroxyphenyl)azo]-6(or 7)-sulphonato-1-naphthyl]azo][1,1'-biphenyl]-4-yl]azo]salicylate DIRECT BROWN 6 Benzoic acid, 5-[[4'-[[7-(dimethylamino)-1-hydroxy-3-sulfo-2-naphthalenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt DIRECT BROWN 59 Direct Brown 61 Benzoic acid, 5-[[4'-[(2-amino-3-hydroxy-6-sulfo-1-naphthalenyl)azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt [2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-[4-[(2,4-diamino-5-methylphenyl)azo]phenyl]-6-methyl-, monosodium salt C.I. Direct brown 62