| Major Indexes Unit | Industrial Grade | Agro Grade |
| Magnesium ( Mg(NO3)2.6H2O ) | 98.0% Min. | 98.0% Min. |
| Water insoluble | 0.05% Max. | 0.1% Max. |
| Iron | 0.001% Max. | -- |
| Heavy metal ( Pd ) | 0.002% Max. | -- |
| Nitrogen Content ( N ) | -- | 10.7% Min. |
| Magnesium oxide Content ( Mg ) | -- | 15% Min. |