Tags: Chemical Compound, Chemical Substance.
Erythrosine also known as Red No. 3 is an organoiodine compound specifically a derivative of fluorone. It is cherry-pink synthetic primarily used for food coloring. It is the disodium salt of 2457-tetraiodofluorescein. Its maximum absorbance is at 530 nm in an aqueous solution and it is subject to photodegradation.[citation needed]
