Used as a powerful reducing agent in organic synthesis, particularly in the reduction of peroxides, ethers, and epoxides. Commonly employed in the preparation of iodides from alcohols and other functional groups. Plays a key role in catalyzing polymerization reactions and in the cleavage of esters and amides. Also utilized in pharmaceutical manufacturing for the synthesis of iodine-containing drugs. In industrial settings, it serves in the production of iodine compounds for use in disinfectants, dyes, and photographic chemicals.