Used in radiation emergencies to protect the thyroid gland from absorbing radioactive iodine. It works by saturating the thyroid with stable iodine, reducing the uptake of harmful radioactive isotopes.

Commonly added to table salt as a nutritional supplement to prevent iodine deficiency, which can lead to goiter and other thyroid disorders.

Employed in medical treatments for certain thyroid conditions such as hyperthyroidism, before surgery or radioiodine therapy, as well as for skin conditions like sporotrichosis, a fungal infection, and historically used as a mucolytic agent to help break down mucus in respiratory diseases.

Widely used in chemical laboratories and industrial processes as a source of iodide ions, particularly in redox titrations and in the preparation of other iodine compounds.

Found in disinfectants and antiseptics due to its ability to release iodine, which has antimicrobial properties.

Used in photography and in the production of dyes and certain pigments.