Used primarily as a photoinitiator in UV-curable coatings and inks, enabling rapid polymerization under UV light exposure. It is also employed in the synthesis of organic compounds, particularly in reactions requiring strong arylating agents. Additionally, it serves as a key component in the production of advanced materials, such as photoresists for microelectronics and semiconductor manufacturing. Its high reactivity and efficiency make it valuable in applications demanding precise and controlled chemical transformations.