Copper(II) 2-ethylhexanoate is widely used as a catalyst in various chemical reactions, particularly in the polymerization of vinyl and styrene compounds for the production of plastics, foams, polymers, and resins. It enhances reaction efficiency and improves product quality. Additionally, it serves as an additive in lubricants to boost performance and prevent rust formation. In the paint and ink industry, it acts as a drier to accelerate hardening upon air exposure. It is also utilized in antifouling paints as a biocide to inhibit marine organism growth on ship hulls and underwater structures, protecting against biological degradation. Furthermore, this compound is employed as a reagent in organic synthesis within chemistry laboratories. Its versatile catalytic and additive properties make it essential in industrial and research applications.