Used as a source of iodine in dietary supplements and iodization of table salt to prevent iodine deficiency disorders. Employed in analytical chemistry for titrations, particularly in redox reactions involving iodine. Serves as an oxidizing agent in various chemical synthesis processes. Utilized in the preparation of radioprotective agents to block uptake of radioactive iodine by the thyroid gland during nuclear emergencies. Also applied in some food processing industries as a flour treatment agent to improve dough strength and baking quality.