Used as a precursor in the synthesis of pesticides, pharmaceuticals, and fragrances. Acts as a stabilizer in polymerization reactions, particularly in resins and rubber. Employed in the production of antioxidants for plastics and fuels. Utilized in electroplating baths to improve metal deposition quality. Found in hair dyes and skin-lightening products, though restricted due to toxicity concerns. Serves as a reagent in analytical chemistry for detecting certain metal ions. Also used in the preparation of photoresists and other specialty chemicals in the electronics industry.