Acetylacetone, also known as 2, 4-pentadione, is an organic compound, chemical formula C5H8O2, colorless to slightly yellow transparent liquid, slightly soluble in water, and ethanol, ether, chloroform, acetone, ice acetic acid and other organic solvents miscible, mainly used as solvent, extraction agent, can also be used in the preparation of gasoline additives, lubricants, mold insecticides, pesticides, dyes, etc.