Fluorescein Sodium Salt

$47.00 - $598.00
SKU:
SLF2035
Molecular Formula:
C20H10O5•2Na
CAS Number:
518-47-8
Molecular Weight:
376.27
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Product Overview

Fluorescein Sodium Salt

Molecular Formula: Fe(NO3)39H2O

CAS Number: 7782-61-8

Molecular Weight: 404.00
 
Fluorescein Sodium Salt is a synthetic organic compound that is a common fluochrome dye. It is obtained from the condensation of phthalic anhydride with resorcinol on heating. It is used in dying silk and wool, ink manufacturing, in coloring cosmetics, and in coloring gasoline and as a toner. It is widely used as a fluorescent tracer for many applications. It appears as a yellowish (yellowish-red) to red solid crystalline powder that is soluble in acetone, methanol, hot alcohol, glacial acetic acid, alkali hydroxides, carbonates and water. Ungraded products supplied by ScienceLab are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption or therapeutic use.

Synonyms: Fluorescein Disodium ; Acid Yellow 73 Sodium Salt ; Resorcinolphthalein Sodium; Uranine

TEST SPECIFICATION RESULTS
Appearance   Dark orange powder
Dye Content   95.6%
E1%   2150 (1 cm, λmax, water)
λmax   490.5 nm (in water)
Loss on Drying   0.5%

Shipping Information

Tariff No. 3204900000

Storage Information

Keep tightly closed