Octadecylamine is a long-chain primary amine with the chemical formula C18H39N. It consists of an 18-carbon alkyl chain attached to an amino group, making it a hydrophobic compound. This structure allows it to interact with various surfaces and materials, often used in applications like surfactants, corrosion inhibitors, and as a coupling agent in polymer chemistry. Due to its unique properties, octadecylamine is also utilized in the production of coatings and adhesives. It can enhance the performance of these materials by improving their adhesion and stability. Additionally, it finds applications in the field of nanotechnology for modifying surfaces of nanoparticles.