| White powder | 99.5% |
| Item | Standard | Results |
| Appearance | Grey-white or white crystal | White crystal |
| Purity | ≥99.5% | 99.93% |
| Melting point | ≥190.5℃ | 192.9℃ |
| Water content | ≤0.15% | 0.03% |
| Ash content | ≤0.05% | 0.02% |
| Cu | ≤2ppm | 0.00ppm |
| Ca | ≤2ppm | 0.10ppm |
| Fe | ≤2ppm | 0.09ppm |
| Na | ≤2ppm | 0.12ppm |
| K | ≤2ppm | 0.05ppm |
| Particle size | ≤1mm | 1mm |
| Conclusion | Qualified | |
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