| 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 |