| Appearance (Colour) | Brownish |
| Appearance (Form) | Powder |
| Solubility (Turbidity) 0.5% aq. solution | Slight opalescent |
| Assay | min. 85% |
| Nitrogen content (on dry basis) | min. 15% |
| Water (KF) | ~10% |
| Phosphorus content | ~8% |
| Electrophoresis test | Passes test |
| Absorbance (A) of 1% solution (pH 7.0) in a 1 cm cell v/s buffer | |
| @260nm | 180 - 200 |
