Used as a high-performance fluorescent whitening agent in plastics, coatings, and synthetic fibers due to its strong UV absorption and blue light emission. Enhances brightness and color clarity in polymer systems, especially in polystyrene, polyolefins, and PET. Also employed in optical brighteners for specialty papers and in some electronic applications as a component in OLED materials for its photostability and efficient light emission. Its rigid molecular structure contributes to thermal stability, making it suitable for high-temperature processing environments.