Used primarily as a photoinitiator in UV-curable formulations, this compound plays a key role in polymer chemistry. It is especially effective in free-radical polymerization processes triggered by ultraviolet light. Common applications include inks, coatings, adhesives, and dental materials where rapid curing under UV exposure is required. Its structure allows for efficient radical generation, promoting fast and strong cross-linking of monomers and oligomers. It is often selected for systems needing high reactivity and good stability in storage.