Used primarily as an intermediate in the synthesis of dyes and pigments, particularly in the production of azo dyes. It plays a crucial role in creating vibrant and stable colorants for textiles, paper, and inks. Additionally, it is employed in the manufacture of certain agrochemicals, where it serves as a building block for herbicides and fungicides. Its sulfonic acid group enhances solubility, making it valuable in formulations requiring water-based applications. In some cases, it is also utilized in the development of specialty chemicals for industrial cleaning agents due to its ability to act as a surfactant or chelating agent.