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Direct Brown 70

Direct Brown 70 Structure
Direct Brown 70 structure
CAS No.
Chemical Name:
Direct Brown 70
Synonyms
Direct Brown 70;C.I.Direct Brown 70:C.I.35530
CBNumber:
CB19702968
Molecular Formula:
Molecular Weight:
0
MDL Number:
MOL File:
Mol file
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Direct Brown 70 Chemical Properties,Uses,Production

Preparation

4-(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 Applications

dark 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 materials

Salicylic acid Benzidine J acid 8-Amino-1-naphthol-3,6-disulfonic acid monosodium salt monohydrate m-Phenylenediamine

Preparation Products

(Direct Brown 70)Related Search:

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

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Direct Brown 70 C.I.Direct Brown 70:C.I.35530