Used as a photoinitiator in UV-curable coatings, inks, and adhesives due to its ability to generate free radicals upon UV exposure, promoting rapid polymerization. Also serves as an intermediate in the synthesis of high-performance polymers and engineering plastics, where it contributes to thermal stability and mechanical strength. Its aromatic structure makes it suitable for applications requiring resistance to oxidation and degradation under harsh conditions. Additionally, employed in specialty optical materials and as a stabilizer in some polymer systems to enhance weatherability.