Used as a photoinitiator in UV-curable systems, particularly in inks, coatings, and adhesives. It enables rapid curing under ultraviolet light by generating free radicals, promoting efficient polymerization. Offers advantages in low-odor formulations and is effective in combination with other photoinitiators to enhance surface cure and reduce oxygen inhibition. Commonly applied in printing inks and clear coatings where yellowing must be minimized.