Potassium iodide is an
inorganic compound with the
chemical formula KI. This white
salt is the most commercially significant iodide compound, with approximately 37,000 tons produced in 1985. It is less
hygroscopic (absorbs water less readily) than
sodium iodide, making it easier to work with. Potassium iodide occurs naturally in
kelp. Kelp's iodide content can range from 89
µg/g to 8165 µg/g.