Specification
| Appearance | Colorless to light yellow liquid | Conform |
| Assay (%) | ≥99.0 | 99.69 |
| Water (%) | ≤0.5 | 0.02 |
| Pyrocatechol (%) | ≤0.5 | 0.01 |
| Appearance | Colorless to light yellow liquid | Conform |
| Assay (%) | ≥99.0 | 99.69 |
| Water (%) | ≤0.5 | 0.02 |
| Pyrocatechol (%) | ≤0.5 | 0.01 |