FLUORESCEIN SODIUM

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Fluorescein is a common fluochrome dye; a yellowish to red crystalline powder; insoluble in water; soluble in dilute acids, and dilute alkali. It is obtained from the condensation of phthalic anhydride with resorcin on heating. It is used in dying silk and wool. It is the parent compound of eosin. All eosins are bromine derivatives of fluorescin, used in dyeing textiles, ink manufacturing, in coloring cosmetics, in coloring gasoline and as a toner. Eosin is a composition of Wright stain, in modified Nocht's stain and eosin-methylene blue medium. The sodium salt of fluorescein is called uranine which are used in dying silk and wool, in oceanography as a marker in sea water, and in coloring agrochemicals, fertilizers, detergents and antifreezers. Fluorescein sodium (uranine) is an orange-red crystalline powder; odorless, water-soluble.

Properties

PHYSICAL STATEorange to red powder, odourless
MELTING POINT> 314 C
SOLUBILITY IN WATERFreely Souluble (600 g/l)
SOLVENT SOLUBILITYMEG (500), DEG (550), PG (300), Glycerol (700), Methanol (230), Ethanol (45), Methoxyethanol (300)
pH 8 - 9.8
NFPA RATINGS Health: 1 Flammability: 0 Reactivity: 0
STABILITYstable under ordinary conditions.

Side effects

Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.

  • Stinging sensation in the eye