Used primarily as a fluorescent whitening agent in polymers and plastics, this compound enhances the visual brightness and clarity of materials under UV light. It is especially effective in polyethylene and polypropylene applications, where it improves the appearance of films, fibers, and molded parts. Its compatibility with high-processing temperatures makes it suitable for extrusion and injection molding. Additionally, it finds use in coatings and adhesives where optical brightening is desired. The compound helps counteract yellowing and maintains a clean, white appearance in end products.