Direct Brown 70

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Direct Brown 70 Basic information
Product Name:Direct Brown 70
Synonyms:Direct Brown 70;C.I.Direct Brown 70:C.I.35530
CAS:
MF:
MW:0
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Mol File:Mol File
Direct Brown 70 Structure
Direct Brown 70 Chemical Properties
Safety Information
MSDS Information
Direct Brown 70 Usage And Synthesis
Preparation4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidcoupling, product to diazo, in alkaline conditions and 7-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 brown. The strong sulfuric acid for purple brown, dilute brown yellow light after precipitation. The dye solution to join strong hydrochloric acid have brown light black precipitation; Add thick sodium hydroxide solution for palm light purple.
Standard Acid Resistance Alkali Resistance Light Fastness Soaping Water
Fading Stain Fading Stain
ISO 4-5 4 2-3 3-4 3-4
Direct Brown 70 Preparation Products And Raw materials
Raw materialsSalicylic acid-->Benzidine-->J acid-->8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt monohydrate-->m-Phenylenediamine
Tag:Direct Brown 70 Related Product Information
Direct Brown 7 C.I. Direct brown 75 DIRECT BROWN 74 6-Amino-3-[[4'-[[2,6-diamino-3-methyl-5-[(4-sulfophenyl)azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]-4-hydroxy-2-naphthalenesulfonic acid disodium salt Direct Brown 69 Direct Brown 73 C.I. Direct Brown 67 Direct Brown 78 4,4'-[(2-Methyl-5-sodiosulfo-1,3-phenylene)bis[azo(4,6-diamino-3,1-phenylene)azo]]bis[naphthalene-1-sulfonic acid sodium] salt