Acetone (CH3COCH3), also known as dimethyl ketone, is the simplest saturated ketone. It is a colorless and transparent liquid with a special pungent smell. Soluble in water and organic solvents such as methanol, ethanol, ether, chloroform and pyridine. Flammable, volatile and chemically active. At present, the industrial production of acetone in the world is mainly cumene method. Acetone is mainly used as a solvent in explosives, plastics, rubber, fiber, tanning, grease, paint and other industries, and can also be used as an important raw material for the synthesis of ketene, acetic anhydride, iodoform, polyisoprene rubber, methacrylic acid, methyl ester, chloroform, epoxy resin and other substances.

Acetylacetone (molecular formula: C5H8O2CH3COCH2COCH3)

Colorless or slightly Huang Yi-flowing transparent liquid with ester smell, which condenses into shiny crystals after cooling. When exposed to light, it is converted into brown liquid to produce resin. Melting point -23℃, boiling point 140.5℃, 139℃(94.5kPa), relative density 0.9753, refractive index 1.4494, flash point 40.56℃, soluble in water, ethanol, ether, chloroform and acetone. Industrial products have an unpleasant smell and are easily decomposed into acetic acid and acetone by water.