Iodine monochloride solution is widely used in organic synthesis as a chlorinating agent, particularly for introducing chlorine atoms into aromatic compounds. It is also employed in the determination of iodine values in fats and oils, a critical measure of unsaturation in these substances. In analytical chemistry, it serves as a reagent for detecting and quantifying unsaturated compounds. Additionally, it is utilized in the preparation of certain pharmaceuticals and dyes, where precise halogenation is required. Its role in industrial processes includes the modification of polymers and the synthesis of specialized chemicals.