| Assay: | ≥ 98% C7H9NO2 |
| MAXIMUM ALLOWABLE | |
| pH of a 5% solution | 5.0-8.0 at 25 °C |
| Insoluble matter: | 0.005% |
| Residue after ignition: | 0.005% |
| Substances reducing permanganate: | Passes Test |
| Chlorine compounds (as Cl): | 0.01% |
| Heavy Metals (as Pb): | 0.001% |
| Iron (Fe): | 0.001% |