Used as a photoinitiator in UV-curable systems, particularly in inks, coatings, and adhesives. It absorbs ultraviolet light and generates free radicals that initiate polymerization of acrylate monomers and oligomers. Offers good thermal stability and low volatility, making it suitable for thin-film applications where odor and migration are concerns. Often blended with other photoinitiators to enhance curing speed and depth, especially in pigmented systems. Shows good compatibility with various resin formulations and contributes to surface cure in oxygen-inhibited environments.