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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 Brown 5 |
| Synonyms: | 2-(1-oxonaphtho[2,1-b]thien-2(1H)-ylidene)naphtho[2,1-b]thiophen-1(2H)-one;Vat brown 5 (C.I. 73410);C.I.73410;C.I.Pigment Brown 27;C.I.Vat Brown 5;Calcotone Brown 2R;Lithosol Fast Brown GP;Δ2,2'(1H,1'H)-Binaphtho[2,1-b]thiophene-1,1'-dione |
| CAS: | 3989-75-1 |
| MF: | C24H12O2S2 |
| MW: | 396.48 |
| EINECS: | 223-633-6 |
| Product Categories: | |
| Mol File: | 3989-75-1.mol |
| Boiling point | 575.7±50.0 °C(Predicted) |
| density | 1.523±0.06 g/cm3(Predicted) |
| EPA Substance Registry System | Naphtho[2,1-b]thiophen-1(2H)-one, 2-(1-oxonaphtho[2,1-b]thien-2(1H)-ylidene)- (3989-75-1) |
| Chemical Properties | Reddish brown powder, insoluble in water and ethanol; slightly soluble in xylene is date red. When encountered with concentrated sulfuric acid is dark brown and turn blue, diluted blue. The cryptochrome in the alkaline insurance powder reducing solution is reddish yellow, in the acidic solution is light brown. It is a sulfur-indigo reducing dye. | ||||||||||||||||||||||||||
| Naphtho[2,1-b]thiophen-1(2H)-one oxidation, this intermediates in Chlorobenzene using Phosphorus trichloride or 2-(Naphthalen-2-ylthio)acetic acid closed loop and have to (BIOS986, 260; FIAT 764). | |||||||||||||||||||||||||||
| Properties and Applications | brown to red light brown. Red brown powder. Insoluble in water and Etanol, slightly soluble in Xylene for bordeaux red solution. In concentrated sulfuric acid to dark brown, and then into blue, after dilution for blue; In the basic insurance powder also concentrate for the red light yellow, In the acidic insurance powder also concentrate for light brown. For light brittle dye. Suitable for direct printing, resist printing and aniline black color printing. Suitable for knitting &cotton fabric dyeing, more suitable for silk printing, and can also be used to viscose and wool dyeing. Can be processed into organic pigment.
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| Preparation Products | Vat Brown 5, Solubilised |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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