This chemical is primarily used as a catalyst or reagent in organic synthesis, particularly in reactions requiring a strong acid catalyst. It is effective in promoting esterification, condensation, and polymerization reactions due to its sulfonic acid group, which enhances reactivity. Additionally, it finds application in the preparation of dyes, pharmaceuticals, and specialty chemicals, where its solubility in water and stability under various conditions are advantageous. Its use in research and industrial processes is valued for its ability to facilitate complex chemical transformations efficiently.