Used as a photoinitiator in UV-curable systems such as coatings, inks, and adhesives. It absorbs ultraviolet light and generates free radicals that initiate polymerization of acrylate monomers. Commonly applied in printing inks and thin film coatings where fast curing under UV light is required. Also utilized in some dental composites and industrial finishes due to its efficiency in radical generation and compatibility with resin systems.