Widely used as a fluorescent whitening agent in polymer systems, this compound enhances the visual appearance of plastics by absorbing ultraviolet light and emitting blue fluorescence, which counteracts yellowish tones. It is particularly effective in polyolefins, polystyrene, and acrylics, where it provides long-term stability and brightness under UV exposure. Its high thermal stability makes it suitable for processing at elevated temperatures during extrusion and molding. Additionally, it is employed in coatings and adhesives to improve optical clarity and whiteness without compromising mechanical properties.