Hexylamine is a primary aliphatic amine that presents as a flammable, water-white liquid with a strong, unpleasant ammonia-like, fishy odor. Hexylamine is used as a chemical reagent and versatile synthetic intermediate in organic synthesis, including the creation of polypeptides, functionalized materials for CO₂ capture, and lipid nanoparticles for drug delivery, Hexylamine is toxic by inhalation, ingestion, or skin contact, requiring careful handling, storage, and disposal procedures.