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| ITEM | STANDARD | RESULTS | |
| Appearance | White crystal | Pass | |
| Assay (%) | ≥99.5 | 99.91 | |
| Melting Point (℃) | 69-70 | 69.5 | |
| Dissociative phenol (%) | ≤0.015 | 0.0141 | |
| Moisture (%) | ≤0.1 | 0.043 | |
| Ash (%) | ≤0.01 | 0.009 | |
| Sulfates (as SO4) (%) | ≤0.002 | 0.0003 | |
| Heavy metal (pb) (%) | ≤0.0004 | ND | |
| As (%) | ≤0.0001 | ND | |
| ITEM | STANDARD | RESULTS | |
| Appearance | White crystal | Pass | |
| Assay (%) | ≥99.5 | 99.91 | |
| Melting Point (℃) | 69-70 | 69.5 | |
| Dissociative phenol (%) | ≤0.015 | 0.0141 | |
| Moisture (%) | ≤0.1 | 0.043 | |
| Ash (%) | ≤0.01 | 0.009 | |
| Sulfates (as SO4) (%) | ≤0.002 | 0.0003 | |
| Heavy metal (pb) (%) | ≤0.0004 | ND | |
| As (%) | ≤0.0001 | ND | |
