Used as a photoinitiator in UV-curable systems, particularly in coatings, inks, and adhesives. It absorbs ultraviolet light to generate free radicals, initiating polymerization of acrylate monomers and oligomers. Its structure allows efficient cleavage upon UV exposure, making it effective in thin films and surface coatings. Also found in some dental composites and 3D printing resins where rapid curing under UV light is required. Shows good solubility in monomer matrices and minimal yellowing after cure, beneficial for clear and aesthetic-sensitive applications.