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Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt

Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt Structure
Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt structure
CAS No.
6442-05-3
Chemical Name:
Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt
Synonyms
Direct Brown 21;C.I.Direct Brown 21:C.I.30155;Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt;sodium,(3Z)-3-[[4-[4-[(2Z)-2-[(5E)-4,6-dioxo-5-[(4-sulfonaphthalen-1-yl)hydrazinylidene]cyclohex-2-en-1-ylidene]hydrazinyl]phenyl]phenyl]hydrazinylidene]-6-oxocyclohexa-1,4-diene-1-carboxylic acid
CBNumber:
CB54784707
Molecular Formula:
C35H22N6Na2O8S
Molecular Weight:
732.62912
MDL Number:
MOL File:
6442-05-3.mol
Request For Quotation

Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt Properties

EPA Substance Registry System C.I. Direct Brown 21 (6442-05-3)

Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt Chemical Properties,Uses,Production

Preparation

4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, and then coupled with Resorcinol?, 4-Hydroxynaphthalene-1-sulfonic acid diazo, and the generation of single azo product matches.

Properties and Applications

brown. Soluble in water for yellow brown, and adequate soluble in alcohol. The strong sulfuric acid for purple, diluted is shallow brown. The dye solution to join strong hydrochloric acid have yellow brown precipitation; Add thick sodium hydroxide solution for orange red to big red.

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

Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt Preparation Products And Raw materials

Raw materials

Salicylic acid Benzidine Resorcinol 1-Naphthol-4-sulfonic acid

Preparation Products

6442-05-3(Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt)Related Search:

Direct Brown 223 Direct Brown 206 CI34035 Direct Brown 227 5-[[4'-[[8-[[2,4-Diamino-5-[(4-sodiosulfophenyl)azo]phenyl]azo]-1-hydroxy-3,6-bis(sodiosulfo)-2-naphthalenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxybenzoic acid sodium salt
Direct Brown 221 Direct Brown 20 Direct Brown 222 C.I. Direct Brown 208

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Benzoic acid, 5-[[4'-[[2,4-dihydroxy-3-[(4-sulfo-1-naphthalenyl)azo]phenyl]azo][1,1'-biphenyl]-4-yl]azo]-2-hydroxy-, disodium salt sodium,(3Z)-3-[[4-[4-[(2Z)-2-[(5E)-4,6-dioxo-5-[(4-sulfonaphthalen-1-yl)hydrazinylidene]cyclohex-2-en-1-ylidene]hydrazinyl]phenyl]phenyl]hydrazinylidene]-6-oxocyclohexa-1,4-diene-1-carboxylic acid C.I.Direct Brown 21:C.I.30155 Direct Brown 21 6442-05-3