Cobalt 2-ethylhexanoate is widely used as a drier in coatings, inks, and adhesives. It accelerates the curing process by promoting the oxidative crosslinking of drying oils and alkyd resins. This makes it essential in paints and varnishes, where it helps achieve faster drying times and improved film formation. It is especially effective in surface drying, ensuring a smooth and durable finish. The compound is also used in combination with other metal driers, such as calcium or zirconium, to balance surface and through-drying. Additionally, it finds application in the production of polyester resins and as a catalyst in polymerization reactions, including the synthesis of synthetic rubbers from monomers like butadiene and isoprene, where it aids in controlling polymer structure for enhanced mechanical properties and wear resistance. Its solubility in organic solvents makes it suitable for use in solvent-based systems.