| Assay: | 98.0-102.0% Mg(NO3)2 · 6H2O |
| pH of a 5% solution: | 5.0 – 8.2 at 25°C |
| MAXIMUM ALLOWABLE | |
| Insoluble matter: | 0.005% |
| Chloride (Cl): | 0.001% |
| Phosphate (PO4): | 5 ppm |
| Sulfate (SO4): | 0.005% |
| Ammonium (NH4): | 0.003% |
| Barium (Ba): | 0.005% |
| Calcium (Ca): | 0.01% |
| Manganese (Mn): | 5 ppm |
| Potassium (K): | 0.005% |
| Sodium (Na): | 0.005% |
| Strontium (Sr): | 0.005% |
| Heavy metals (as Pb): | 5 ppm |
| Iron (Fe): | 5 ppm |