Dodecanoyl chloride is primarily used as a key reagent in organic synthesis, particularly for the introduction of the dodecanoyl group into various molecules. It is widely employed in the production of surfactants, which are essential components in detergents, emulsifiers, and cleaning agents. Additionally, it serves as an intermediate in the synthesis of pharmaceuticals, where it is utilized to modify the structure of active compounds to enhance their properties or efficacy. In the field of polymer chemistry, dodecanoyl chloride is used to create specialized polymers and coatings, providing specific characteristics like water resistance or durability. It also finds application in the preparation of esters and amides, which are important in fragrances, flavors, and agrochemicals.