Used primarily as a photoinitiator in UV-curable systems. It is highly effective in initiating free radical polymerization upon exposure to ultraviolet light. Commonly applied in UV printing inks, coatings, and adhesives due to its high sensitivity and reactivity under UV radiation. Offers good storage stability and promotes rapid curing even in thin films. Frequently combined with co-initiators to enhance curing efficiency and depth in various resin formulations. Suitable for applications requiring low migration and high clarity, such as in packaging and graphic arts.