An acetate, also known as an ethanoate, a compound in which the acid
hydrogen atom in acetic acid is replaced
either by a metal (forming a soluble acetate salt containing the ion (CH3COO-)
or by an organic radical (giving a covalent ester such as ethyl acetate (CH3COOC2H5). Acetate
esters are of great commercial importance, being used as solvents and for the manufacture of plastics and
fibers. The various cellulose acetates are used in sheet form as a base
for photographic films.