Primarily used in the dye and pigment industry, this compound serves as a key intermediate in the synthesis of azo dyes, which are widely employed for coloring textiles, paper, and leather. Its disulfonic acid groups enhance water solubility, making it suitable for dye formulations that require even distribution and strong adherence to substrates. Additionally, it is utilized in the production of optical brighteners, which improve the whiteness and brightness of materials like fabrics and plastics. The compound’s ability to form stable complexes also finds applications in analytical chemistry, where it is used as a reagent for detecting and quantifying metal ions.