Product name: Phenolphthalein
No.: A013
CAS No.: 77-09-8
M F: C20H14O4
Purity: 98%min
Property: White or light yellow triclinic fine crystal, soluble in ethyl alcohol, ethyl ether, slightly solube in trichloromethane, poorly soluble in water, melting point: 258-262℃.
Molecular weight: 318.38
Technical index |
Item | Technical grade |
Mass absorption coefficient α(L/cm.g) | 68.0-75.0 |
PH color change interval | 8.0(colorless)-10.0(reddish violet) |
Soluble test in ethyl alcohol | Qualified |
Ignition residue% | ≤0.05 |
Drying loss % | ≤1.0 |