Fluorescein sodium salt is a disodium salt of fluorescein and a noted pH sensitive fluorophore. Fluorescein sodium salt has been utilized in studies as a drug model, as a penetrating dye and also as a fluorescein tracer. Fluorescein sodium salt has also been used in vitro to quantify root dentin demineralization. Additional reported uses include microscopy, as a gain medium in dye laser use and to detect latent blood stains in vitro.

Used in microscopy

Minimum Assay: 98.5-100.5%

Empirical Formula: C20H10Na2O5

Molecular Weight: 376.27 g/mol.

Hazard Phrazes: Not considered harmful under normal laboratory conditions

Cas No: 518-47-8
Einecs No: 208-253-0