Used primarily as a photoinitiator in UV-curable systems, this compound plays a key role in polymer chemistry. It is especially effective in free-radical polymerization reactions triggered by ultraviolet light. Common applications include inks, coatings, and adhesives that require rapid curing under UV exposure. Its ability to generate radicals efficiently makes it suitable for clear and pigmented systems where deep cure and surface hardness are needed. It is also utilized in 3D printing resins and dental materials due to its reliable reactivity and low yellowing upon curing.