Acetate
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An acetate, or ethanoate, is a salt or ester of acetic acid.
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Acetate
The acetate anion, [CH3COO]−, is a carboxylate and is the conjugate base of acetic acid. The acetate ion is formed by the deprotonation of acetic acid:
- CH3COOH ⇌ CH3COO− + H+
Acetate esters
An acetate ester is an ester of acetic acid, with the general formula CH3COOR, where R is an organyl group.
Acetate can also refer to cellulose acetate, especially fibres or other derived products such as the acetate disc used in audio record production. Cellulose acetate can be found in many household products.
Notation in organic chemistry
In the field of organic chemistry the abbreviation Ac refers to the acetyl group. Hence, acetate can be written −OAc or AcO− and acetic acid, sodium acetate, and ethyl acetate can be denoted by HOAc, NaOAc, and EtOAc respectively.
Ac is also the symbol for the chemical element actinium, but confusion between actinium and the acetyl group is rare, since actinium has virtually no role in organic chemistry.
Structures
Acetate-anion-3D-vdW.png
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Acetate-anion-3D-balls.png
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Acetate-anion-2D.png
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Acetate-anion-resonance-hybrid-2D-skeletal.png
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Acetate-resonance-2D-skeletal.png
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Acetate-anion-canonical-form-2D-skeletal.png
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Acetate-ester-2D-skeletal.png
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Acetyl-group-2D-skeletal.png
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See also
gl:Acetato id:Asetat it:Acetato nl:Acetaat nn:Acetatfi:Asetaatti
