Used as a key intermediate in the production of specialty polymers, particularly polyesters and polyamides, to enhance dyeability and moisture absorption properties. It is also employed in the synthesis of liquid crystal polymers (LCPs) for high-performance plastics used in electronics and automotive components. Additionally, it serves as a surfactant or dispersing agent in various industrial applications, including coatings, inks, and detergents, due to its ability to improve stability and solubility. In the textile industry, it is utilized to modify fibers for better dye uptake and colorfastness.