Direct Brown 191
- Product Name
- Direct Brown 191
- CAS No.
- 10190-16-6
- Chemical Name
- Direct Brown 191
- Synonyms
- Direct Brown 191;C.I.Direct Brown 191:C.I.13220
- CBNumber
- CB89702952
- Formula Weight
- 0
- MOL File
- Mol file
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Direct Brown 191 Chemical Properties,Usage,Production
Preparation
4-Aminobenzenesulfonic acid diazo, and Benzene-1,3-diamine coupling.
Properties and Applications
red light brown. Soluble in water for yellow orange, soluble in ethanol for yellow. The strong sulfuric acid in orange, diluted to orange still. The dye solution to join strong hydrochloric acid have orange brown precipitation; Add thick sodium hydroxide solution discoloration.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 5 | 5 | 4 | 4-5 | 5 | ||
Direct Brown 191 Preparation Products And Raw materials
Raw materials
Preparation Products
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Direct Brown 191 Suppliers
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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