| ITEM | STANDARD | RESULTS | ||
| Characters | White or yellowish powder | White powder | ||
| Magnesium | 14.5%-16.4% | 15.53% | ||
| Chloride（Cl） | Maximum 0.05% | Less than 0.05% | ||
| Sulphate | Maximum 0.2% | Less than 0.2% | ||
| Heavy metals | Maximum 10 PPM | Less than 10PPM | ||
| Loss on drying | Maximum 29% | 26.85% | ||
| Oxalates | Maximum 280PPM | Less than 200ppm | ||
| Calcium（Ca） | Maximum 0.2% | Less than 0.2% | ||
| Ferrum (Fe) | Maximum 200PPM | Less than 200PPM | ||
| Arsenic (As) | Maximum 1PPM | Less than 1PPM | ||
| Lead (Pb) | Maximum 1PPM | Less than 1PPM | ||
| Cadmium (Cd) | Maximum 1PPM | Less than 1PPM | ||
| Mercury (Hg) | Maximum 0.1PPM | Less than 0.1PPM | ||
| Organic volatile impurity | Pass the test | Pass the test | ||
| PH Value | 6.0-8.5 | 7.30 | ||
| Total aerobic microbial count | ≤1000 cfu/g | <1000cfu/g | ||
| Total yeasts and moulds count | ≤100 cfu/g | <100cfu/g | ||
| Bile-tolerant gram negative bacteria | ≤100 cfu/g | <100cfu/g | ||
| Salmonella | N.D./25g | Not detected | ||
| Escherichia coli | N.D./10g | Not detected | ||
| Staphylococcus aureus | N.D./10g | Not detected | ||
| Conclusion | Meets USP32 | |||
| ITEM | MOA | STANDARD | RESULTS |
| Characters | VT | White or almost white, fine, slightly hygroscopic powder. Practically odourless, soluble in water, freely soluble in diluted acid, practically insoluble in ethanol (96%) | Confine |
| Identification | EP | A.Reaction of citrates
B.Reaction of magnesium |
Pass the test
Pass the test |
| Appearance of solution | VT | No more opalescent than reference suspension III and not more intensely colored than reference solutions Y7 or BY6 | Confine |
| Solubility | VT | ≥20g (100ml water in normal temperature) | 20.02g |
| Magnesium | Titration | 15.0%-16.5% | 15.49% |
| PH Value | PH meter | 6.0-8.5 | 7.71 |
| Loss on drying(180℃,5H) | Dry decrement | Maximum 3.5% | 1.85% |
| Oxalates | Colorimetry | Maximum 280PPM | Less than 200ppm |
| Chloride (Cl) | Colorimetry | Maximum 0.2% | Less than 0.05% |
| Sulphate | Colorimetry | Maximum 0.2% | Less than 0.2% |
| Calcium (Ca) | GB | Maximum 0.2% | Less than 0.2% |
| Iron | GB | Maximum100PPM | Less than 100PPM |
| Heavy metals | Colorimetry | Maximum 10 PPM | Less than 10PPM |
| Arsenic (As) | GB | Maximum 1PPM | Less than 1PPM |
| Lead | GB | Maximum 1PPM | Less than 1PPM |
| Cadmium | GB | Maximum 1PPM | Less than 1PPM |
| Mercury | GB | Maximum 0.1PPM | Less than 0.1PPM |
| Total bacterial count | EP | ≤1,000 cfu/g | <1000cfu/g |
| Molds and yeasts | EP | ≤100 cfu/g | <100cfu/g |
| Salmonella | EP | N.D./25g | Not detected |
| E.Coli | EP | N.D./10g | Not detected |
