C.I. Direct Brown 208
- CAS NO.：8005-95-6
- Molecular Weight: 0
- EINECS: 616-882-0
What is C.I. Direct Brown 208?
Preparation
3-Aminobenzenesulfonic acid (0.5 Moore) and 4-Aminobenzenesulfonic acid (0.5 Moore) diazo, and Benzene-1,3-diamine coupling, Naphthalen-1-amine diazo again, and formation of accidentally coupled nitrogen compounds.
Properties and Applications
brown. Moderate soluble in water for olive yellow brown, soluble in ethanol for yellow orange brown. The strong sulfuric acid for purple brown to black, with golden yellow diluted. The dye solution to join strong hydrochloric acid have dark brown precipitation; Add thick sodium hydroxide solution for yellow orange brown, have precipitation.
| Standard | Acid Resistance | Alkali Resistance | Light Fastness | Soaping | Water | ||
| Fading | Stain | Fading | Stain | ||||
| ISO | 5 | 4 | 3 | 4 | 3 | ||
Safety information for C.I. Direct Brown 208
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