PRODUCT Properties
| Melting point: | 490-492°C |
| Boiling point: | 906.7±75.0 °C(Predicted) |
| Density | 1.66 |
| pka | 1.40±0.20(Predicted) |
| form | Powder |
| LogP | -0.24 at 24℃ and pH6.3 |
| EPA Substance Registry System | Bisbenzimidazo[2,1-b:1',2'-j]benzo[lmn][3,8]phenanthroline-6,9-dione (4216-02-8) |
Description and Uses
Vat Red 15 is a red dye.



![3H,3'H-[2,2'-Bibenzo[b]thiophenylidene]-3,3'-dione](https://img.chemicalbook.com/CAS/GIF/522-75-8.gif)


