Dictionary Definition
acetate
Noun
1 a salt or ester of acetic acid [syn: ethanoate]
2 a fabric made from cellulose acetate fibers
[syn: acetate
rayon]
User Contributed Dictionary
Pronunciation
Noun
- Any salt or ester of acetic acid.
- cellulose acetate
- A transparent sheet used for overlays.
- A disc of aluminium covered in a wax used to make demonstration copies of a phonograph record.
Synonyms
- ethanoate (1)
Translations
salt or ester of acetic acid
cellulose acetate
transparent overlay sheet
aluminium disc covered in wax
Extensive Definition
In organic
chemistry, the abbreviation Ac refers to the acetyl group. The anion and the
functional group may be written as −OAc and AcO−, or OAc
respectively. Examples include HOAc and NaOAc for acetic acid
and sodium
acetate for the former, and EtOAc for ethyl
acetate for the latter. 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.
Salt
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+
Ester
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.
Structures
See also
acetate in German: Acetat
acetate in Spanish: Acetato
acetate in French: Acétate
acetate in Galician: Acetato
acetate in Indonesian: Asetat
acetate in Dutch: Acetaat
acetate in Norwegian Nynorsk: Acetat
acetate in Polish: Octany
acetate in Portuguese: Acetato
acetate in Romanian: Acetat
acetate in Finnish: Asetaatti
acetate in Chinese: 乙酸盐