Thymolphthalein
| Use attributes for filter ! | |
| Formula | C28H30O4 |
|---|---|
| Molar mass | 430. 53 g/mol |
| Boiling point | 571. 6 °C |
| Melting point | 248 to 252 °C (478 to 486 °F; 521 to 525 K) (decomposes) |
| R-phrases (outdated) | 4, 10 |
| Appearance | White powder |
| Date of Reg. | |
| Date of Upd. | |
| ID | 1158610 |
About Thymolphthalein
Thymolphthalein is a phthalein dye used as a acid–base indicator. Its transition range is around pH 9. 3–10. 5. Below this pH, it is colorless; above, it is blue. The molar extinction coefficient for the blue thymolphthalein dianion is 38,000 M⁻¹ cm⁻¹ at 595 nm.
Thymolphthalein Photos
