Used primarily in the production of azo dyes for coloring textiles, paper, and leather. It serves as a key intermediate in the synthesis of various pigments and dyestuffs. Additionally, it is employed in the manufacture of rubber chemicals, pesticides, corrosion inhibitors, and other agricultural products. In the pharmaceutical industry, it acts as a precursor for certain drugs. It is also utilized in research laboratories for organic synthesis and chemical analysis. Due to its toxicity and potential health risks, including carcinogenicity, its use must be strictly controlled under safety regulations.