Used primarily in the textile industry as a dye intermediate, it aids in the synthesis of dyes and pigments, enhancing color fastness and brightness. It also serves as a dispersing agent in the production of concrete admixtures, improving workability and strength. In water treatment, it acts as a chelating agent to bind and remove metal ions, ensuring water purity. Additionally, it finds application in the paper industry as a retention agent, improving paper quality and production efficiency. Its versatility extends to research, where it is utilized in biochemical studies for its sulfonate groups' reactivity.