Used as a photoinitiator in UV-curable systems, particularly in inks, coatings, and adhesives. It efficiently generates free radicals upon UV exposure, enabling rapid polymerization and curing under low-intensity light. Offers good thermal stability and is effective in deep-layer curing due to its absorption in the long-wavelength UV range. Commonly used in printing inks and electronic materials where precise curing and minimal yellowing are required.