| Appearance (Colour) | Whiteor almost white , Colourless |
| Appearance (Form) | Crystalline powder, Crystals |
| Solubility | Freely soluble in water,slightly in alcohol |
| Melting Point | It melts about 205°C with decomposition |
| Identification (IR Spectrum) | A) Passes |
| Identification | B )By TLC
C) By Chemical test
D) By chemical test |
| Solubility (Turbidity) 20% aq. solution | Clear on standing standing 24hrs. |
| Solubility (Colour) 20% aq. solution | Colourless |
| Appearance of Solution | Solution S is colourless and remains clear on standing 24 hrs. |
| pH (20% aq. solution) | 7.5 - 8.0 |
| Absorbance | A) 287 nm : NMT 0.1 & 450 nm : NMT 0.03
B) 287 nm : NMT 0.15 & 450 nm :NMT 0.03 |
| Ninhydrin - Positive substance | By TLC |
| Loss on drying | NMT 0.5% |
| Sulphated Ash | NMT 0.1% |
| Assay (On dry basis) | 98.5 - 101.0% |
| Reference | BP 2020 |
