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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: | Vat Black 8 |
| Synonyms: | 1H-benz[6,7]indazole[2,3,4-fgh]naphth[2'',3'':6',7']indolo[3',2':5,6]anthra[2,1,9-mna]acridine-2,7,10,15-tetrone;Dycosthren Grey M;Grey M;Hibeithrene Grey M;Indanthren Grey M;Mikethrene Grey M;Nihonthrene Grey M;Novatic Grey M |
| CAS: | 2278-50-4 |
| MF: | C45H19N3O4 |
| MW: | 665.66 |
| EINECS: | 218-906-1 |
| Product Categories: | Organics |
| Mol File: | 2278-50-4.mol |
| Boiling point | 685.55°C (rough estimate) |
| density | 1.2394 (rough estimate) |
| refractive index | 1.7790 (estimate) |
| pka | 13.18±0.20(Predicted) |
| EPA Substance Registry System | 1H-Benz[6,7]indazolo[2,3,4-fgh]naphth[2'',3'':6',7']indolo[3',2':5,6]anthra[2,1,9-mna]acridine-2,7,10,15-tetrone (2278-50-4) |
| Chemical Properties | Black powder. Insoluble in water, acetone, ethanol, chloroform, toluene, slightly soluble in o-chlorophenol, pyridine. Yellowish green in concentrated sulfuric acid, produces black precipitate after dilution. Bluish green in alkaline solution of insurance powder, reddish brown in acidic solution. | |||||||||||||||||
| 3,9-Dibromo-7H-benzo[de]anthracen-7-one, 3H-naphtho[2,3-f]indazol-3-one and 1-Aminoanthracene-9,10-dione in Potassium hydroxide under the existence of condensation, closed loop. | ||||||||||||||||||
| Safety Profile | Mildly toxic by intraperitoneal and ingestion routes. An eye irritant.When heated to decomposition it emits toxic fumes of NOx. | |||||||||||||||||
blue light grey. Black powder. Insoluble in water, Acetone, Etanol, Toluene and Chloroform, slightly soluble in 2 – Chlorophenol, Pyridine . In concentrated sulfuric acid to have yellow green: alkaline reduction leuco for blue light green; Acid reduction leuco for red brown: mainly used in the cotton fabric jig dyeing, dyeing and suspended pad dyeing, also used for Fiber/cotton, polyester-cotton blended fabric two bath set of dye dyeing. Suitable for suspension pad dyeing deep, shallow gray, and can spell dye all kinds of noise. Its main leuco dye yarn, can also be used to viscose and silk dyeing.
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| Raw materials | Sodium hydroxide-->Bromine-->Sodium sulfite-->Sodium bisulfite-->Chlorosulfonic acid-->Copper(I) chloride-->Sodium hypochlorite-->1-Aminoanthraquinone-->Benzanthrone-->Diffusing agent-->INDUSTRIAL SALT-->Butylnaphtalenesulfonic Acid Sodium Salt-->1,4-Dibromobenzene-->1,9-Pyrazoloanthrone-->1,9-Pyrazoloanthrone-->3,9-Dibromobenzanthrone-->1-Aminoanthraquinone |
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