Iodine is one of the rarest non-metallic elements and is not naturally found in the liberal state but combined to other elements, it is present in rocks, soil and water and is essential for plants and animals. Iodine occurs in the form of brown-black granules or flakes with a metallic shine and has a very distinctive odour. Iodine vapours cause inflammation to mucous membranes and, depending on the concentration, may cause lacrimation, conjunctivitis, and inflammation of the respiratory system. In medicine, iodine is used to treat thyroid disorders or in ointments as an anti-septic and parasiticide. In Italy, Todini distributes Iodine and its simple salts in the animal husbandry, agricultural, pharmaceutical and industrial sectors.