Physical state at 20 °C | Solid | Odour | Odorless |
Melting point/ Freezing point [°C] | > 250°C | Solubility in water [% weight] | Slightly soluble in water |
Colour | White powder | pH value | 3.4 – 3.7 at 20 °C |
Density [g/cm3] | 1.954 |
Appearance | White or almost white, crystalline powder or colourless crystals |
Assay (acidimetric; on dried basis) | 99.5 – 100.5% |
Solubility | Passes test |
Identification | Passes test |
Specific optical rotation ([α]20/D) | + 8.0° to + 9.2° |
Oxalic acid | Max. 0.05% |
Chloride (Cl) | Max. 0.05% |
Sulphate (SO4) | Max. 0.05% |
Barium (Ba) | Passes test |
Heavy metal (as Pb) | Max. 0.001% |
Loss on drying (at 105°C) | Max. 0.5% |