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
- 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
- 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
- Formula Weight
- 732.62912
- MOL File
- 6442-05-3.mol
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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 Property
- EPA Substance Registry System
- C.I. Direct Brown 21 (6442-05-3)
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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 Chemical Properties,Usage,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
Preparation Products
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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 Suppliers
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 saltRelated 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