| Appearance (Colour) | White to yellow |
| Appearance (Form) | Crystalline compound |
| Solubility (Turbidity) 2% aq. solution | Clear |
| Solubility (Colour) 2% aq. solution | Colourless to pale yellow |
| Solubility (Turbidity) 10% solution in methanol | Clear |
| Solubility (Colour) 10% solution in methanol | Colourless to pale yellow |
| Assay (UV) | min. 98% |
| Loss on drying | max. 3% |
| Sulphated Ash | max. 0.2% |
| Melting Point | 147 - 150°C |
| Absorbance (A) of 0.001% solution in Methanol in a 1cm cell | |
| @242nm | ~0.73 |
| @350nm | ~0.44 |
