Used primarily as a photoinitiator in UV-curable formulations. It efficiently generates free radicals upon exposure to ultraviolet light, making it ideal for initiating polymerization in coatings, inks, and adhesives. Commonly found in clear coatings and pigmented systems due to its good light stability and low yellowing. Also suitable for applications requiring rapid curing under low-energy UV sources. Its solubility in both polar and non-polar monomers enhances formulation flexibility. Frequently used in 3D printing resins, dental materials, and electronic encapsulation where deep cure and minimal odor are important.