NILE CHEMICALS |
|
NILE CHEMICALS |
THYMOLPHTHALEIN |
SPECIFICATION SHEET |
| CAS No. | 125 - 20 - 2 |  |
| Chemical Formula | C28H30O4 | |
| Molecular Weight | 430.54 | |
| Melting Point | 251 - 253° c | |
| Dye Content | ~95% | |
| Solution Clarity (Ethanol) | To pass | |
| Absorption Max pH10.5 | 592 - 596 nm | |
| Absorptivity (1%,1cm) pH10.5 | 1034 | |
| Transition Range | pH 9.3 - 10.5 Colourless - Blue |
|
| Loss On Drying (110° c) | < 3% |