| Appearance | White or white-like crystalline powder |
| Identification | A:I.R, B:UV, C: Color reaction, D: Reaction characteristic of chlorides |
| Residue on ignition | ≤0.1% |
| Chromatographic purity | ≤0.5% |
| Picoline | At 262 nm absorbance is not greater than 0.52 |
| Solubility | Soluble in water |
| Loss on drying | ≤1.0% |
| Assay | 97.0-101.0% |