Used primarily in the production of dyes and pigments, it serves as a key intermediate in synthesizing azo dyes, which are widely applied in textile, paper, and leather industries. Its sulfonic acid group enhances water solubility, making it suitable for dye formulations. Additionally, it is utilized in the manufacture of optical brighteners and as a precursor in organic synthesis for pharmaceuticals and agrochemicals. Its role in creating colorants with good fastness properties is particularly valued in industrial applications.