Used in electroplating processes to deposit copper coatings on various substrates, enhancing conductivity and corrosion resistance. Commonly employed as a catalyst or reagent in organic synthesis, particularly in oxidation reactions such as the production of phenols or aldehydes. Applied in the preparation of other copper-based compounds and materials, including catalysts, pigments for ceramics and glass (providing green or blue colors), and in the production of printed circuit boards. Utilized in textile printing and dyeing as a mordant to fix colors. Also serves as a nitrating agent in laboratory settings. Additionally, used in metal coatings, petrochemical catalysts, batteries, and certain magnetic materials.