Iodine monochloride is widely used as a halogenating agent in organic synthesis, particularly for the iodination of aromatic compounds. It facilitates the introduction of iodine atoms into organic molecules, which is essential in the production of pharmaceuticals, dyes, and other fine chemicals. In analytical chemistry, it serves as a reagent for the determination of unsaturated compounds, helping to identify and quantify double or triple bonds in organic substances. Additionally, it is employed in the preparation of iodinated organic compounds, which are valuable intermediates in various chemical processes. Its role in these applications highlights its importance in both industrial and laboratory settings.