Physical state at 20 °C | Solid | Odour | Slight tartaric odor |
Melting point/ Freezing point [°C] | 120°C | Solubility in water [% weight] | Soluble in water |
Colour | White crystalline | pH value | 7 – 9 at 50 g/l at 20 °C |
Density [g/cm3] | 1.82 |
Appearance | White crystalline powder |
Assay (by HClO4 titration) | Min 99% |
pH (5% solution in water; 25°C) | 7.0 – 9.0 |
Chloride (Cl) | Max 0.01% |
Sulphate (SO4) | Max 0.05% |
Iron (Fe) | Max 0.004% |
Heavy metal (as Pb) | Max 0.002% |