Sodium Fluorescein
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
C20H10Na2O5 376.28—Orange-red, hygroscopic powder. Freely soluble in water; slightly soluble in alcohol. Its water solution is yellowish red in color and exhibits a strong yellowish green fluorescence that disappears when the solution is acididied and reappears when the solution is neutralized or made basic.
Loss on Drying〈731〉: Dry it at 120° to constant weight: it loses not more than 7.0% of its weight.
