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Akston Health
| Name | Manganese binoxide (MnO2) |
| Relative molecular mass | 86.94 |
| Extrinsic feature | Black powder |
| Melting point | 535°C |
| Relative density | 5.03 |
| Solubility | Insoluble in water, not soluble in nitric acid. Soluble in acetone. |
| MnO2 mass fraction | 90% |
| Mn mass fraction | 59% |
| Fe | 0.35% |
| Water | 3.0% |
| PH | 5~7 |