Diethylene glycol dibutyl ether, molecular formula: C₁₂H₂₆O₃, is a colorless clear liquid, packaged in barrels. It has a faint ether-like odor, is slightly soluble in water, and miscible with alcohols/ethers/ketones/halogenated hydrocarbons; it is a flammable liquid;

This product is an industrial solvent, primarily used as an extractant for dilute aqueous solutions of fatty acids, for the extraction of uranium, polonium, and gold, also used in the fragrance and pharmaceutical industries, and can serve as a solvent coupling agent and hydraulic fluid medium.