Iodine-based biocides are used in industrial applications such as paints, adhesives, wood treatment and metalworking fluids.
Liquid crystal displays utilize two sheets of polarizing material with a liquid crystal solution between them. Iodine is a key component in these polarizing films..
Iodine is important in human nutrition, as the body needs to have a certain quantity of iodine to avoid conditions such as goiters, thyroid malfunctioning and potential mental retardation and abnormal growth in developing fetuses. Salt is iodized practically all over the word, in attempt to prevent these conditions.
Iodine is extensively used in the pharmaceutical industry, as a raw material for x-ray contrast media and antiseptics, as well as a catalyst or reagent in the synthesis of several active pharmaceutical ingredients such as antibiotics, corticosteroids and cardiovascular drugs.