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Direct Brown 25

Direct Brown 25 Structure
Direct Brown 25 structure
CAS No.
Chemical Name:
Direct Brown 25
Synonyms
Direct Brown 25;C.I.Direct Brown 25:C.I.36030
CBNumber:
CB09702961
Molecular Formula:
Molecular Weight:
0
MDL Number:
MOL File:
Mol file
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Direct Brown 25 Chemical Properties,Uses,Production

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and C.I. Basic Brown (C.I. 21000) coupled.

Properties and Applications

brown to red light brown. Soluble in water for yellow brown to olive brown, slightly soluble in ethanol, acetone, soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid for purple to blue-black, diluted is shallow brown; In nitric acid of for olive completely dissolved. The dye solution to join strong hydrochloric acid with olives brown precipitation; Add thick sodium hydroxide solution have yellow brown to orange brown precipitation.

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

Direct Brown 25 Preparation Products And Raw materials

Raw materials

1-Naphthylamine-7-sulfonic acid Salicylic acid Benzidine 1-Aminonaphthalene-6-sulfonic acid

Preparation Products

(Direct Brown 25)Related Search:

disodium 3-[[4-[[4-[(2,4-diamino-5-nitrophenyl)azo]-m-tolyl]azo]-o-tolyl]azo]naphthalene-1,5-disulphonate C.I. Direct Brown 29 disodium 2'-[4-[[1-hydroxy-7-(phenylamino)-3-sulphonato-2-naphthyl]azo]phenyl]-6-methyl[2,6'-bibenzothiazole]-7-sulphonate C.I. Direct brown 26 Direct brown 33 (C.I. 35520)
Direct Brown 250 trisodium 5-[[4'-[[4-[(4-amino-7-sulphonato-1-naphthyl)azo]-6-sulphonato-1-naphthyl]azo][1,1'-biphenyl]-4-yl]azo]salicylate C.I. Direct Brown 34 DIRECT BROWN B

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Direct Brown 25 C.I.Direct Brown 25:C.I.36030