Used primarily as a photoinitiator in UV-curable systems such as inks, coatings, and adhesives. It is especially effective in free radical polymerization processes where rapid curing under ultraviolet light is required. Its high reactivity and ability to generate radicals efficiently make it suitable for clear and pigmented formulations. Commonly found in printing inks, electronic coatings, and dental materials due to its low yellowing and good surface cure performance. Also compatible with various monomers and oligomers, enhancing formulation flexibility.