n-Butylamine is also known as butylamine and 1-butylamine, with the chemical formula CH3(CH2)3NH2. Molecular weight 73.14. It is a colorless transparent liquid with an ammonia smell. It turns yellow when standing. It is volatile and smokes in the air. The relative density is 0.739 (25/4℃), the melting point is -5.05℃, the boiling point is 77.8℃, and the refractive index is 1.401. It is soluble in water, ethanol, ether, and easily reacts with acids, chemicalbook aldehydes, olefin oxides, etc. It is irritating to the skin, mucous membranes and eyes. LD50500mg/kg (oral for mice). It is prepared by gas phase reaction of butyraldehyde, ammonia and hydrogen, or by gas phase catalytic hydrogenation and dehydration of butanol and ammonia. It is used as an additive for petroleum products, a cracked gasoline anti-gelling agent, a color photo developer, and is also used in the synthesis of pesticides, emulsifiers and drugs for the treatment of diabetes. Application