Used primarily as a photoinitiator in UV-curable systems, this compound plays a key role in polymer chemistry. It is effective in initiating free radical polymerization upon exposure to ultraviolet light, making it valuable in coatings, inks, and adhesives that require rapid curing under UV light. Its ability to absorb in the long-wavelength UV region allows for efficient curing in thick or pigmented formulations. Additionally, it has been studied in photochemical research for its potential in developing new light-sensitive materials.