Used primarily as a halogenating agent in organic synthesis, it facilitates the introduction of iodine atoms into organic molecules, which is crucial for producing iodinated compounds. It serves as a powerful disinfectant and antiseptic in medical and laboratory settings, effectively killing bacteria, viruses, and fungi. In analytical chemistry, it is employed as a reagent for iodometric titrations to determine the concentration of reducing agents. Additionally, it plays a role in the preparation of dyes and pharmaceuticals, where precise halogenation is required. Its strong oxidizing properties make it useful in various industrial processes, including water treatment and material synthesis.