| Magnesium oxidc(USP-24 version) |
| 1. Properly: |
White powder;odorless; flavorless |
| 2. Authentication : |
Magnesium salts:positive |
| 3. Loss on ignition (800 C \25C ): |
10.0% |
| 4. Free alkali and soluble salt: |
A2.0ml(0.10NH2SO4)B +2.0% |
| 5. Insolublc substance in acid: |
+0.1% |
| 6. Calcium : |
+1.1% |
| 7. Heavy metal |
+20ppm |
| 8. Iron salts: |
+0.05% |
| 9. Content(after ignition): |
96.0-100.5% |
| 10. Molecular fonnula: |
MgO |