9-Decyn-1-ol is primarily used in organic synthesis as a building block for more complex chemical structures. Its terminal alkyne group makes it a valuable intermediate in click chemistry reactions, particularly in the formation of triazoles through copper-catalyzed azide-alkyne cycloaddition. This property is leveraged in the development of pharmaceuticals, agrochemicals, and materials science, where precise molecular assembly is crucial. Additionally, it serves as a precursor in the production of surfactants and lubricants, where its long hydrocarbon chain and functional groups contribute to desired properties like viscosity and surface activity. In research, it is often utilized to study alkyne reactivity and to create specialized polymers or coatings with tailored characteristics.