Appearance | White to off-white solid |
---|---|
pH (5% in water) | 7.0-9.2 |
Assay (T, dry) | 99.0-101.0%w/w |
Water insolubles | max. 0.01% |
Loss on drying (120°C) | max. 1.0% |
Chloride (Cl) | max. 0.002% |
Phosphate (PO4) | max. 0.001% |
Sulfate (SO4) | max. 0.003% |
Calcium (Ca) | max. 0.005% |
Magnesium (Mg) | max. 0.002% |
Heavy metals (as Pb) | max. 0.001% |
Iron (Fe) | max. 0.001% |