| Appearance: | Clear, colorless liquid | |
| Result | Limits | |
| Assay: | 99.91% | 99.5% min. |
| Water Content (Karl Fischer): | 0.003% | |
| UV-visible Data (1.0 cm cell vs. water): | ||
| 205 nm | 0.522 | 1.00 max. |
| 210 nm | 0.109 | 0.30 max. |
| 225 nm | 0.007 | 0.10 max. |
| 280 nm | 0.004 | 0.05 max. |
| 320 nm | 0.0001 | 0.02 max. |
| 340-400 nm | ≤0.0001 | 0.01 max. |