| ≥1 piece |
Assay: 99.0%~101.0%
State of solution:Clear and colorless 98.0% min.
Loss on drying: 0.2% max.
Heavy metals[Pb]: 0.001% max.
Residue on ignition: 0.1% max.
Arsenic[As2O3]: 0.0001% max.
Iron[Fe]: 0.001% max.
Sulphate[SO4]: 0.006% max.
Chloride[Cl]: 0.02% max.
PH: 5.5 to 6.6