Direct Brown 185
- Product Name
- Direct Brown 185
- CAS No.
- 6375-50-4
- Chemical Name
- Direct Brown 185
- Synonyms
- Direct Brown 185;C.I.Direct Brown 185:C.I.22855
- CBNumber
- CB49702949
- Molecular Formula
- C25H19N4NaO8S
- Formula Weight
- 558.5
- MOL File
- 6375-50-4.mol
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Direct Brown 185 Chemical Properties,Usage,Production
Preparation
2-Amino-5-(4-aminophenyl)benzenesulfonic acid double nitriding, Followed by coupling with ?2-Hydroxybenzoic acid?and Resorcinol coupling.
Properties and Applications
red light brown. Soluble in water for yellow orange, slightly soluble in alcohol. The strong sulfuric acid to red light purple, diluted for brown. The dye solution to join strong hydrochloric acid for orange brown, have precipitation; With strong sodium hydroxide solution for red orange brown.
Direct Brown 185 Preparation Products And Raw materials
Raw materials
Preparation Products
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Direct Brown 185 Suppliers
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Direct Brown 186
sodium 2,6-bis[(2,4-diaminophenyl)azo]toluene-4-sulphonate
5-[[4'-[[3-[(3-Carboxy-2-hydroxy-5-sulfophenyl)azo]-2,6-dihydroxyphenyl]azo]-1,1'-biphenyl-4-yl]azo]-2-hydroxybenzoic acid trisodium salt
2-Hydroxy-5-[[4'-[[2,6-dihydroxy-3-[[2-hydroxy-5-(aminosulfonyl)phenyl]azo]phenyl]azo]-1,1'-biphenyl-4-yl]azo]benzoic acid sodium salt