Used as a disinfectant for wound treatment and surface sterilization due to its ability to kill bacteria, viruses, and fungi. Commonly found in antiseptic solutions like tincture of iodine and povidone-iodine for medical use.

Essential in thyroid function as a key component of thyroid hormones; used in dietary supplements and iodized salt to prevent iodine deficiency disorders such as goiter.

Employed in laboratory settings as a reagent for titration, particularly in iodometric titrations to determine oxidizing and reducing agents. Also used to detect the presence of starch, forming a characteristic blue-black complex.

Used in water purification to disinfect drinking water, especially in portable tablets for camping and travel.

Applied in the pharmaceutical industry for synthesizing contrast agents used in medical imaging, such as in X-ray and CT scans.

Utilized in organic chemistry as a catalyst or reagent in various reactions, including iodination and oxidation processes.

Found in some dyes and pigments, and used in the production of liquid crystal displays (LCDs) and polarizing films for electronic devices.