Used in photography and film industries as a component in specialized emulsions due to its light-sensitive properties. Employed in animal feed as a nutritional supplement to prevent iodine deficiency, particularly in livestock. Utilized in some medical applications as a source of iodine for treating iodine-deficient conditions. Serves as a catalyst or reagent in organic synthesis, especially in iodination reactions. Occasionally used in water treatment processes to control microbial growth. Also found in certain types of cloud seeding operations to promote precipitation.