Used as a photoinitiator in polymer chemistry, this compound plays a key role in UV-curable systems. It absorbs ultraviolet light and generates free radicals that initiate the polymerization of acrylates and methacrylates. Commonly found in coatings, inks, and adhesives, it enables fast curing under UV light, making it valuable in printing, electronics, and dental materials. Its high molar extinction coefficient and good thermal stability enhance performance in thin-film applications where deep cure and shelf life are important.