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Technical Data Sheet Fluorescein
Compound Information
Product Name:
Fluorescein
CAS No.:
2321-07-5
Molecular Formula:
C20H12O5
Molecular Weight:
332.31
Revision Date:
2026-04-15
Analytical Information
| Tests | Specifications |
|---|---|
| Appearance | Orange to red-brown or maroon powder |
| Purity (Sodium Hydroxide Titration) | 94.5 - 105.5% |
| Solubility | Solubility Insoluble in water, ether, benzene, chloroform; soluble in ethanol, methanol, acetone, Iethyl acetate, N,N-dimethylformamide |
| Absorption Excitation (1) | 488 - 492 nm |
| Extinction Coefficient (1) | ≥ 70000 |
| Absorption Excitation (2) | 282 - 286 nm |
| Extinction Coefficient (2) | ≥ 12000 |
| Absorption Excitation (3) | 236 - 240 nm |
| Extinction Coefficient (3) | ≥ 39000 |
| MS | Pass test |
| ¹H NMR | Pass test |
| ¹³C NMR | Pass test |
| IR | Pass test |
| Raman | Pass test |
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