Used as a photoinitiator in radical polymerization reactions, particularly in UV-curable systems. It efficiently generates free radicals upon exposure to light, enabling rapid curing of coatings, inks, and adhesives. Its high thermal stability and solubility in polar solvents make it suitable for applications requiring precise control over initiation timing. Also employed in 3D printing resins where fast curing and low odor are desired. Shows good performance in both thin films and bulk polymerization due to consistent reactivity.