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 processes triggered by ultraviolet light. Common applications include UV-curable inks, coatings, and adhesives, where it helps achieve rapid curing under low-intensity UV light. Its solubility in organic matrices and efficient radical generation make it suitable for clear coatings and thin films. It is often paired with other photoinitiators to enhance curing speed and depth, particularly in oxygen-sensitive environments.