| Item | Standard | Result |
| Appearance | White crystals or crystalline powder | Passed |
| Na 2 SO 4 | ≥ 99.0% | 99.60% |
| NaCL | ≤ 0.35% | 0.005% |
| Fe | ≤ 0.002% | 0.001% |
| Mg ( Ca , Mg ) | ≤ 0.15% | 0.01% |
| Water Non-dissolved Matter | ≤ 0.05% | 0.04% |
| Whiteness | ≥ 88% | 92% |
| Moisture | ≤ 0.20% | 0.02% |
| Ph | 6-9 | 8.09 |