Used as a highly effective photoinitiator in cationic polymerization processes, particularly in UV-curing applications. It enables rapid curing of epoxy and vinyl ether monomers upon exposure to ultraviolet or visible light, making it valuable in coatings, inks, and adhesives. Its strong oxidizing nature and thermal stability allow for efficient initiation under mild conditions, even in low-light environments. Commonly applied in advanced lithography, 3D printing, and microelectronics due to its high sensitivity and low required concentration.