C.I. Direct Brown 18
- Product Name
- C.I. Direct Brown 18
- CAS No.
- 8007-34-9
- Chemical Name
- C.I. Direct Brown 18
- Synonyms
- Direct Brown 18;C.I. Direct Brown 18;C.I.Direct Brown 18:C.I.20220
- CBNumber
- CB34773541
- Formula Weight
- 0
- MOL File
- Mol file
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C.I. Direct Brown 18 Chemical Properties,Usage,Production
Preparation
6-Aminonaphthalene-1-sulfonic acid diazo, and Resorcinol coupling, C.I. Direct Yellow 59 (C.I. 49000) to diazo, and the generation of single accidentally coupled nitrogen compounds.
Properties and Applications
brown. For yellow brown is soluble in water, soluble in ethanol for orange brown. The strong sulfuric acid for orange brown, for yellow brown after diluted. The dye solution to join strong hydrochloric acid have yellow brown precipitation; Add thick sodium hydroxide solution for red light orange brown.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 4 | 3 | 2 | 1 | 1 | ||
C.I. Direct Brown 18 Preparation Products And Raw materials
Raw materials
Preparation Products
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C.I. Direct Brown 18 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