Diethylamine is an organic compound with the chemical formula C4H11N. It is a colorless liquid with a strong, fishy odor and is classified as a secondary amine. Diethylamine is commonly used in the production of pharmaceuticals, agrochemicals, and as a solvent in various chemical reactions. This compound is soluble in water and can form salts with acids. Due to its basic nature, diethylamine can act as a nucleophile in chemical reactions. It is important to handle diethylamine with care, as it can be harmful if inhaled or absorbed through the skin.