Decanenitrile is primarily used in organic synthesis as a versatile intermediate for producing various chemicals, including amines, acids, and other nitrile derivatives. It serves as a building block in the manufacture of pharmaceuticals, agrochemicals, and specialty chemicals. In the fragrance industry, it is utilized to create unique scent profiles due to its distinct chemical structure. Additionally, it finds application in research and development for studying reaction mechanisms and developing new synthetic pathways. Its hydrophobic nature also makes it suitable for use in formulations requiring non-polar solvents or additives.