Widely used as a photoinitiator in UV-curable systems, this compound plays a key role in polymer chemistry. It is especially effective in free radical polymerization of acrylates and methacrylates upon exposure to ultraviolet or visible light. Commonly found in coatings, inks, and adhesives, it enables rapid curing with low energy consumption. Its high efficiency in light absorption and ability to work in combination with co-initiators like amines make it suitable for clear and pigmented formulations. It is also utilized in 3D printing resins and dental composites where deep curing and low residual odor are important.