C.I. Direct brown 62

C.I. Direct brown 62 structure

CAS No.: 8003-56-3

Chemical Name:: C.I. Direct brown 62

Synonyms: Direct Brown 62;C.I. Direct brown 62;C.I.Direct Brown 62:C.I.31720

CBNumber:: CB22497576

Molecular Formula:: C36H28N8O9S2.3Na

Molecular Weight:: 849.77

MDL Number:

MOL File:: Mol file

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C.I. Direct brown 62 Properties

EPA Substance Registry System	C.I. Direct Brown 62 (8003-56-3)

C.I. Direct brown 62 Chemical Properties,Uses,Production

Preparation

4-(4-Aminophenyl)benzenamine double nitriding,first coupled with 2-Hydroxybenzoic acid, then with 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and 2,4-Diamino-5-methylbenzenesulfonic acid coupling.

Properties and Applications

red light brown. Soluble in water for orange brown, slightly soluble in alcohol. In the dark for the strong sulfuric acid, diluted is shallow brown. The dye solution to join strong hydrochloric acid with brown precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	1	3-4	2	1-2		2

C.I. Direct brown 62 Preparation Products And Raw materials

Raw materials

1-Naphthylamine-7-sulfonic acid Salicylic acid Benzidine 1-Aminonaphthalene-6-sulfonic acid 4,6-diaminotoluene-3-sulphonic acid

Preparation Products

8003-56-3(C.I. Direct brown 62)Related Search:

Direct Brown 57 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

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C.I. Direct brown 62 C.I.Direct Brown 62:C.I.31720 Direct Brown 62 8003-56-3