Pharmaceutical grade magnesium oxide is a chemical substance widely used in food and pharmaceutical fields. As a food additive, it can be used to regulate acidity, stabilize food and puff dough; in the pharmaceutical field, it is often used as an antacid to treat gastric ulcers and indigestion. It is safe and widely used in the food and pharmaceutical industries
ZH-VBPH is Pharmaceutical grade products which comply with the British Pharmacopeia.
| Test Item | Specified Value | Test Result |
|---|---|---|
| Appearance | Fine, White powder | PASS |
| Identification | Reaction of magnesium | PASS |
| Solubility | Water insoluble, dissolve in dilute acid with slight effervesce | PASS |
| Assay | 98.0% to 100.5% of Magnesium Oxide, calculated on ignited substance | 99.62 |
| Particle Size Distribution | More than 95% materials should be less than 180 μm & more than 90% material should be less than 150 μm | 42.66 |
| Soluble Substances (%) | ≤ 2.0 | 0.33 |
| Substances insoluble in acid (%) | ≤ 0.1 | 0.03 |
| Appearance of Solution | ≤ B3 | B3 |
| Chlorides (%) | ≤0.1 | 0.01 |
| Sulfates (%) | ≤1 | 0.04 |
| Arsenic (ppm) | ≤4 | 2 |
| Calcium (%) | ≤ 1.5 | 0.0038 |
| Iron (%) | ≤ 0.07 | 0.0020 |
| Heavy Metals (ppm) | ≤ 30 | 12 |
| Bulk Density (g/mL) | ≥ 0.25 | 0.77 |
| Loss on ignition (%) | ≤ 8 | 0.48 |
