Food Grade
Magnesium Sulphate Heptahydrate
Joint FAO/WHO Expert Committee on Food Additives
CAS Number: 10034-99-8
Molecular Weight: 246.482 g/mol
Molecular Formula: MgSO4.7H2O
| Test | Specifications |
|---|---|
| Assay | NLT 99.0% – NMT 100.5% |
| Solubility | Freely soluble in water, very soluble in boiling water, and sparingly soluble in ethanol. |
| Loss on Ignition | 40.0 and 52.0% |
| Chloride (Cl) | Not more than 0.03% |
| Iron (Fe) | Not more than 20 mg/kg |
| Lead (Pb) | Not more than 2 mg/kg |
| Appearance | Colourless crystals, granular crystalline powder, or white powder. Crystals effloresce in warm, dry air. |
| pH | Between 5.5 and 7.5 (1 in 20 solution) |
| Arsenic | Not more than 3 mg/kg |
| Selenium | Not more than 30 mg/kg |
Magnesium Sulphate Monohydrate
Joint FAO/WHO Expert Committee on Food Additives
CAS Number: 14168-73-1
Molecular Weight: 138.386 g/mol
Molecular Formula: MgSO4.7H2O
| Test | Specifications |
|---|---|
| Assay | NMT 99.0% – NMT 100.5% |
| Solubility | Freely soluble in water, very soluble in boiling water, and sparingly soluble in ethanol. |
| Loss on Ignition | 13.0 and 16.0% |
| Chloride (Cl) | Not more than 0.03% |
| Iron (Fe) | Not more than 20 ppm |
| Lead | Not more than 2 ppm |
| Appearance | Colourless crystals, granular crystalline powder or white powder. Crystals effloresce in warm, dry air. |
| pH | Between 5.5 and 7.5 (1 in 20 solution) |
| Arsenic | Not more than 3 ppm |
| Selenium | Not more than 30 ppm |