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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

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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 Basic information
Product 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: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
CAS:6442-05-3
MF:C35H22N6Na2O8S
MW:732.62912
EINECS:613-594-7
Product Categories:
Mol File:6442-05-3.mol
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 Chemical Properties
EPA Substance Registry SystemC.I. Direct Brown 21 (6442-05-3)
Safety Information
MSDS Information
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 Usage And Synthesis
Preparation4-(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 Applicationsbrown. 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 materialsSalicylic acid-->Benzidine-->Resorcinol-->1-Naphthol-4-sulfonic acid
Tag: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(6442-05-3) Related Product Information
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