Used primarily as a catalyst in various organic reactions, including oxidation and nitration processes. It is also employed in the production of copper-based pigments and dyes for ceramics and textiles. In analytical chemistry, it serves as a reagent for detecting reducing sugars. Additionally, it is utilized in the synthesis of other copper compounds and in the manufacturing of pyrotechnics to produce blue-green flames. In the field of electronics, it is used in the preparation of conductive inks and coatings.