Used primarily in the dye and pigment industry, it serves as an intermediate for synthesizing 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 is utilized in the production of optical brighteners and as a reagent in analytical chemistry for detecting specific metal ions. Its versatile structure also finds applications in research for developing new organic compounds.