Naphthenic acid is widely used in the industrial sector for its versatile properties. It is commonly employed as a corrosion inhibitor in metalworking fluids, protecting machinery and equipment from rust and degradation. In the oil and gas industry, it serves as an additive in lubricants and fuel formulations to enhance performance and reduce wear. Additionally, it is utilized in the production of wood preservatives, providing protection against fungal and insect damage. Naphthenic acid also finds applications in the manufacturing of paints, varnishes, and coatings, where it acts as a drying agent to improve finish quality. Its surfactant properties make it useful in the formulation of detergents and cleaning agents, aiding in the removal of grease and dirt. Furthermore, it is used in the synthesis of various chemical intermediates, contributing to the production of plastics, rubber, and other materials.