Diacetate may refer to:
A chemical compound, or , that is a double acetate ester Cellulose diacetate, sometimes simply called diacetate, poly-(Glc(OAc)2) A chemical compound, , that contains two acetoxy groups, –OAc or The anion of sodium diacetate, consisting of an acetate ion hydrogen-bonded to acetic acid, The anion of acetoacetic acid, also known as diacetic acid, (or a salt thereof)
See also