Appearance | White to colorless solid |
---|---|
Assay (T) | 99.0-101.0%w/w |
pH (5% in water) | 4.1-4.5 |
Loss on drying (105°C) | max. 0.2% |
Chloride (Cl) | max. 0.001% |
Heavy metals (as Pb) | max. 0.001% |
Iron (Fe) | max. 0.002% |
Sulfate (SO4) | max. 0.003% |
Sodium (Na) | max. 0.005% |
Water insolubles | max. 0.01% |