Colorants and Dyes

Iodine is used in the production of Erythrosine (tetraiodo fluorescein, also named Red #3). Erythrosine is a most efficacious food, drug and cosmetic colorant, providing a deep cherry color.


Other dyes containing iodine, include reds 4′, 5’-diiodo fluorescein, rose bengal and blues from cyanine groups like kriptocyanine, cyanine and pinachrome. Those last are used in printer inks, photographic sensitizers or textile dyes.