
| Thymolphthalein AR 25GM | |||
| 21850SG025 | 963930306GZ | ||
| AR | 9639303 | ||
| 125-20-2 | 120135 | ||
| C28H30O4 | July 2026 | ||
| 430.55 | June 2031 | ||
| Sr.No. | Test | Result | Specification | Method Reference |
|---|---|---|---|---|
| 1 | Description | White crystalline powder. | White to light yellow crystalline powder. | |
| 2 | Solubility | Complies | Insoluble in water. Soluble in alcohol. | |
| 3 | Transition range(pH 9.3-10.5) | Complies | Colourless to blue. | |
| 4 | Absorption(L max pH 10.5) | 594nm | 592 - 596 nm | |
| 5 | Absorptivity(A 1%,1cm L max.pH 10.5 ) | 1008 | > 800 | |
| 6 | Loss on drying,110°C | 2.1% | 3.0% max |
| Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |