Chemical Properties
| Melting point | 650° |
| Density | 5.133 (Little); d 4.85 [Schneider, Pogg. Ann. 127, 624 (1866)] |
| solubility | insoluble in H2O; soluble in alkaline solutions, concacid |
| form | red-brown crystals |
| color | red-brown crystals, crystalline |
| Water Solubility | soluble in alkali, conc acids; decomposed by HNO3 [MER06] |
| CAS DataBase Reference | 20770-09-6 |