ANALYTICAL ITEMS | SPECIFICATION |
Appearance | White crystalline powder |
Loss on drying | ≤1.0% |
Residue on ignition | ≤ 0.2% |
pH | 2.3~2.6 |
Solubility | Very soluble in water |
Melting point | 195°C~201°C |
NH 4 | ≤ 0.01% |
Heavy Metals (as Pb) | ≤10ppm |
Arsenic | ≤1ppm |
Assay | 98.0%~102.0% |