Complaint
| Name of Indexes | Manufacturer's Standard | USP-32 |
| Appearance | white or yellowish powder | white or yellowish powder |
| Mg % | 10.5-16.4 | 14.5-16.4 |
| Loss on drying % | 20 - 32 | 29 |
| Chloride≤% | 0.05 | 0.05 |
| Sulphate ≤% | 0.2 | 0.2 |
| As ≤% | 0.0003 | 0.0003 |
| Heavy metal ≤% | 0.002 | 0.005 |
| pH | - | 5.0-9.0 |
| Ca ≤% | - | 1.0 |
| Iron(Fe) ≤% | - | 0.02 |
| organic volatile impurities | Pass test |
