CAS number： 14808-60-7
Molecular formula： SiO2
molecular weight： 60.084
Chemical structure：
| Product name | Silicon Dioxide | |
| Shelf life | Two years | |
| Inspection Standard | USP32 | |
| Items | Specifications | Results |
| Identification | Complies | Conforms |
| PH | 4.0-8.0 | 6.6 |
| Loss on drying | ≤5.0% | 3.9% |
| Loss on ignition | ≤8.5% | 5.3% |
| Chloride | ≤0.1% | ＜0.1% |
| Sulfate | ≤0.5% | ＜0.5% |
| Arsenic | ≤3PPM | ＜3PPM |
| Heavy metals | ≤0.003% | ＜0.003% |
| Assay | ＞99% | 99.2% |
| Comclusion | It conforms to USP32. | |
