This chemical is widely used in the textile industry as an intermediate in the production of dyes and pigments. It plays a crucial role in synthesizing azo dyes, which are applied to color fabrics, leather, and paper. Additionally, it is utilized in the manufacturing of fluorescent whitening agents that enhance the brightness of textiles and detergents. Its sulfonate groups improve water solubility, making it effective in dyeing processes. It also finds application in analytical chemistry as a reagent for detecting specific metal ions due to its complexing properties.