erythrosine,erythrosine aluminum lake
Erythrosine,erythrosine aluminum lake also known as Red No. 3, is an organoiodine compound and Natural Pigment, specifically a derivative of fluorone. It is cherry-pink synthetic, primarily used for food coloring. It is the disodium salt of 2,4,5,7-tetraiodofluorescein. Its maximum absorbance is at 530 nm in an aqueous solution, and it is subject to photodegradation.
It is used as a:
food coloring
printing ink
biological stain[6]
dental plaque disclosing agent
radiopaque medium
sensitizer for orthochromatic photographic films
Erythrosine is commonly used in sweets such as some candies and popsicles, and even more widely used in cake-decorating gels. It is also used to color pistachio shells. As a food additive, it has the E number E127.
