| ITEMS | STANDARD |
| Appearance | Clear,yellow or greenish-yellow,Viscous,Oily liquid |
| Assay % | 98.0-102.0 |
| Identification | |
| A | To conform |
| B | To conform |
| C | The retention time of principal peak in the test solution conforms to which in the reference solution |
| Acidity | =<1.0ml |
| Organic Volatile Impurities Isobutyl Acetate | =<0.25% |