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Direct Brown 25

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Direct Brown 25 Basic information
Product Name:Direct Brown 25
Synonyms:Direct Brown 25;C.I.Direct Brown 25:C.I.36030
CAS:
MF:
MW:0
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Mol File:Mol File
Direct Brown 25 Structure
Direct Brown 25 Chemical Properties
Safety Information
MSDS Information
Direct Brown 25 Usage And Synthesis
Preparation4-(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 Applicationsbrown 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 materials1-Naphthylamine-7-sulfonic acid-->Salicylic acid-->Benzidine-->1-Aminonaphthalene-6-sulfonic acid
Tag:Direct Brown 25 Related Product Information
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