| S.No | Test | Specification |
| 1. | Description | White to brown color powder. |
| 2. | Identification by GC | |
| The retention time of the major peak in the chromatogram of the sample solution should correspond to that in the chromatogram of the standard, as obtained in the Chromatographic purity. | ||
| 3. | Wet content by KF | Not more than 5.0 % w/w |
| 4. | Chromatographic purity (% area normalization by GC | |
| a) Purity | Not less than 95% | |
| b) Diacid impurity | Not more than 3.0% | |
| c) Diester impurity | Not more than 1.5% | |
| d) Any other individual impurity | Not more than 0.5% |