125-20-2
| Name | Thymolphthalein |
| CAS | 125-20-2 |
| EINECS(EC#) | 204-729-7 |
| Molecular Formula | C28H30O4 |
| MDL Number | MFCD00005909 |
| Molecular Weight | 430.54 |
| MOL File | 125-20-2.mol |
Chemical Properties
| Appearance | white fine crystalline powder |
| Melting point | 251-253 °C(lit.) |
| Boiling point | 504.79°C (rough estimate) |
| density | 0.92 g/mL at 25 °C |
| vapor pressure | 0.002Pa at 90℃ |
| refractive index | 1.6400 (estimate) |
| Fp | 74 °F |
| storage temp. | Store at RT. |
| solubility | ethanol: clarity passes test |
| form | Low Melting Mass |
| pka | 9.70, 10.0(at 25℃) |
| color | White to slightly yellow |
| Specific Gravity | 0.92 |
| Odor | Mild characteristic odor |
| PH | 8.6～10.5 |
| PH Range | 9.3(colourless)-10.5(blue) |
| explosive limit | 3.30-19% |
| Water Solubility | insoluble |
| λmax | 592nm, 396nm, 598nm |
Safety Data
| Hazard Codes | F,Xn |
| Risk Statements | |
| Safety Statements | |
| RIDADR | UN 1170 3/PG 3 |
| WGK Germany | 3 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29322980 |