Product name: Fluorescein
No.:A035
CAS No.: 2321-7-5
M F: C20H12O5
Property: Orange or red powder, soluble in hot ethyl alcohol, acetic acid and alkali liquid, insoluble in water.
Molecular weight: 332.31
Use: Adsorption indicator; oxidation-reduction indicator, etc.
Technical index |
Item: | Technical grade |
Maximum absorption wavelengthλ(PH8.0),nm | 490-493 |
Mass-absorption coefficientλ(PH8.0),L/(cm?g) | ≥200 |
Soluble test in ethyl alcohol | Qualified |
Ignition residue% | ≤0.3 |
Drying loss% | ≤5.0 |
Sensitivity test | Qualified |