Used as a photoinitiator in UV-curable systems, particularly in inks, coatings, and adhesives. It efficiently generates free radicals upon exposure to ultraviolet light, promoting rapid polymerization of acrylate-based monomers and oligomers. Its high molar absorptivity and good thermal stability make it suitable for thin-film applications where complete curing is critical. Often blended with co-initiators to enhance reactivity and reduce yellowing in final products. Also employed in specialty printing technologies due to its compatibility with various resin formulations and ability to cure under low-intensity UV sources.