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 |