Used primarily as an intermediate in the synthesis of dyes and pigments, it plays a crucial role in the production of vibrant and stable colorants for textiles and inks. In the pharmaceutical industry, it serves as a building block for creating various active pharmaceutical ingredients, particularly those involving sulfonamide derivatives. Additionally, it is employed in organic synthesis for introducing sulfonic acid groups into molecules, enhancing their solubility and reactivity. Its application extends to the manufacturing of surfactants and detergents, where it contributes to the formulation of effective cleaning agents.