Used primarily as a photoinitiator in UV-curable systems. It is effective in inks, coatings, and adhesives that require rapid curing upon exposure to ultraviolet light. Offers good thermal stability and promotes strong curing under low-intensity UV sources. Commonly used in printing inks and electronic materials where precise and fast polymerization is needed. Also found in some photoresists and imaging systems due to its sensitivity and efficiency in free radical generation.