Product name: Thymolphthalein
No.:A029
CAS No.: 125-20-2
M F: C28H30O4
Property: White or light yellow powder, insoluble in water, soluble in ethyl alcohol.
Molecular weight: 430.54
Use: Acid-base indicator, pH9.3(colorless)～10.5(blue)
Technical index |
Item: | Result |
PH color change range | 9.3(colorless)-10.5(blue) |
Soluble test in ethyl alcohol | Qualified |
Ignition residue% | ≤0.1 |
Melting point ℃ | 251.0-255.0 |