Widely used as a fluorescent whitening agent, this compound enhances the appearance of whiteness and brightness in materials by absorbing ultraviolet light and re-emitting it as blue visible light. It is commonly added to detergents to make fabrics appear cleaner and brighter after washing. Also incorporated into plastics, coatings, and synthetic fibers during manufacturing to counteract yellowing and improve visual clarity. Its stability under heat and light makes it suitable for high-temperature processing applications. Frequently used in paper production to improve the optical appearance of white paper products. Effective at low concentrations, it provides long-lasting brightness without significantly altering the base properties of the material.