Used primarily in the dye and pigment industry, it serves as an intermediate in the synthesis of azo dyes, which are widely applied in textiles, paper, and leather coloring. Its sulfonic acid groups enhance water solubility, making it suitable for dyeing processes. Additionally, it plays a role in the production of colorants for inks and coatings. In analytical chemistry, it is employed as a reagent for detecting specific ions or compounds. Its derivatives are also explored in research for potential applications in organic electronics and photochemical studies.