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Acetate, or ethanoate, is the anion of a salt or ester of acetic acid.
In Organic chemistry, the acetate ion has the formula CH3CO2-, and is the conjugate base of acetic acid.
Acetate can also refer to cellulose acetate, especially fibers or other derived products such as the acetate disc used in audio record production. Acetate can be found in many household products.
Historically (prior to the discovery and naming of actinium) the abbreviation Ac (or AC) was sometimes used in chemical formulas to indicate the acetate ion. For example, the formula for sodium acetate might be given as "NaAc", rather than the more modern "CH3COONa" or "NaC2H3O2".
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