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| OEM | OEM Services Provided |
| Feature | Good stability,Easy to Use |
| Classification | Dyes and Pigments |
| Advantage | Professional, Fast Delivery, Customizable | Samples | Apply for free，Contact us now. |
| Product Name: | Sulphur Brown 5 |
| Synonyms: | Sulphur Brown 5;Sulfur brown 5 (C.I. 53245);Sulphur Brown 5 ISO 9001：2015 REACH;C.I.Sulphur Brown 5:C.I.53245 |
| CAS: | 1327-00-0 |
| MF: | |
| MW: | 0 |
| EINECS: | |
| Product Categories: | |
| Mol File: | Mol File |
| Preparation | (1) 4-(2,4-Dinitrophenylamino)phenol and Sodium hydroxide and water is heated to 105 ℃, then add glucose, Sodium sulfide, sulphur and a small amount of Copper sulfate monohydrate, short time boiling, in 20 hours heating to 260 ~ 270 ℃ and roasting 6 hours; (2) (1) the improvement and Sodium hydroxide solution after boiling, with acid precipitation generated degradation products and filtering, will the paste which add to the above Sodium polysulfide solution. Molten material of save glucose also can get similar dye. Further change the above operation process is to use ?4-(2,4-Dinitrophenylamino)phenol?(by 2-Aminophenol and 1-Chloro-2,4-dinitrobenzene obtained) instead of 4-(2,4-Dinitrophenylamino)phenol. | |||||||||||||||||
dark brown. Black gray powder. Part of the soluble in water, moderate soluble in sodium sulfide solution, for the red light brown. In concentrated sulfuric acid to dark brown. Dyeing content in alkaline insurance powder solution for yellow brown, oxidation to recover to the original colour and lustre; Sodium hypochlorite solution in almost all fade, join concentrated sulfuric acid color darker.
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| Raw materials | 4-(2,4-DINITROANILINO)PHENOL-->2-Aminophenol-->2,4-Dinitrochlorobenzene |
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