| Molecular Formula: C28H30O4 |
| Molecular Weight: 430.54 |
| Properties: white or light yellow powder; soluble in ethanol, insoluble in water; m.p.: Around 245°C. |
| Use: as acid-base indicator or used in chromatographic analysis |
| Melting range |
251.0-255.0°C |
| PH range |
9.3(colorless)-10.5(blue) |
| Ethanol solubility test |
Qualified |
| Sodium hydroxide solubility test |
Qualified |
| Residue on ignition(sulphate) |
≤0.1% |
