Used primarily as an intermediate in the production of dyes and pigments, it plays a crucial role in synthesizing azo dyes, which are widely employed in textiles, paper, and leather industries. Its sulfonic acid group enhances water solubility, making it suitable for dye formulations that require good binding to fabrics. Additionally, it is utilized in the manufacture of fluorescent brightening agents, improving the whiteness and brightness of materials. In research, it serves as a building block for developing organic compounds with potential applications in pharmaceuticals and advanced materials. Its versatility in chemical reactions makes it valuable for creating complex molecules with specific properties.