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Acetate

 

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Acetate



 
 
An acetate, or ethanoate, is either a salt or ester
Ester

An ester is an often Aroma compound organic chemistry or partially organic compound formed by the reaction between an acid and an alcohol or aromatic alcohol with the elimination of water....
 of acetic acid
Acetic acid

Acetic acid, CH3COOH, also known as ethanoic acid, is an organic acid which gives vinegar its sour taste and pungent smell. Pure, water-free acetic acid is a colourless liquid that absorbs water from the environment , and freezes at 16.7 Celsius to a colourless crystalline solid....
.

In chemistry, the abbreviation Ac refers to the acetyl
Acetyl

In organic chemistry, acetyl , is a functional group, the acyl of acetic acid, with chemical formula -CarbonOxygenCarbonHydrogen3. It is sometimes abbreviated as Ac ....
 group. The anion and the functional group may be written as -OAc and AcO-, or OAc respectively. Examples include HOAc for acetic acid
Acetic acid

Acetic acid, CH3COOH, also known as ethanoic acid, is an organic acid which gives vinegar its sour taste and pungent smell. Pure, water-free acetic acid is a colourless liquid that absorbs water from the environment , and freezes at 16.7 Celsius to a colourless crystalline solid....
, NaOAc for sodium acetate
Sodium acetate

Sodium acetate, is the sodium Salt of acetic acid. It is an inexpensive chemical produced in industrial quantities for a wide range of uses....
, and EtOAc for ethyl acetate
Ethyl acetate

Ethyl acetate is the organic compound with the formula CH3COOCH2CH3. This colorless liquid has a characteristic sweet smell like certain glues or nail polish removers, in which it is used....
. Ac is also the symbol for the chemical element
Chemical element

A chemical element is a type of atom that is distinguished by its atomic number; that is, by the number of protons in its atomic nucleus. The term is also used to refer to a pure chemical Chemical substance composed of atoms with the same number of protons....
 actinium
Actinium

Actinium is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899. It was the first Primordial element to be isolated, although polonium, radium and radon were observed before, but not isolated until 1902....
, but confusion between actinium and the acetyl group is rare, since actinium has virtually no role in organic chemistry.

acetate anion, [CH3COO]-, is a carboxylate and is the conjugate base
Conjugate acid

Within the Johannes Nicolaus Br?nsted-Martin Lowry theory of acid-base reaction theories, a conjugate acid is the acid member, HX, of a pair of two compounds that transform into each other by gain or loss of a proton....
 of acetic acid
Acetic acid

Acetic acid, CH3COOH, also known as ethanoic acid, is an organic acid which gives vinegar its sour taste and pungent smell. Pure, water-free acetic acid is a colourless liquid that absorbs water from the environment , and freezes at 16.7 Celsius to a colourless crystalline solid....
.






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Encyclopedia


An acetate, or ethanoate, is either a salt or ester
Ester

An ester is an often Aroma compound organic chemistry or partially organic compound formed by the reaction between an acid and an alcohol or aromatic alcohol with the elimination of water....
 of acetic acid
Acetic acid

Acetic acid, CH3COOH, also known as ethanoic acid, is an organic acid which gives vinegar its sour taste and pungent smell. Pure, water-free acetic acid is a colourless liquid that absorbs water from the environment , and freezes at 16.7 Celsius to a colourless crystalline solid....
.

In chemistry, the abbreviation Ac refers to the acetyl
Acetyl

In organic chemistry, acetyl , is a functional group, the acyl of acetic acid, with chemical formula -CarbonOxygenCarbonHydrogen3. It is sometimes abbreviated as Ac ....
 group. The anion and the functional group may be written as -OAc and AcO-, or OAc respectively. Examples include HOAc for acetic acid
Acetic acid

Acetic acid, CH3COOH, also known as ethanoic acid, is an organic acid which gives vinegar its sour taste and pungent smell. Pure, water-free acetic acid is a colourless liquid that absorbs water from the environment , and freezes at 16.7 Celsius to a colourless crystalline solid....
, NaOAc for sodium acetate
Sodium acetate

Sodium acetate, is the sodium Salt of acetic acid. It is an inexpensive chemical produced in industrial quantities for a wide range of uses....
, and EtOAc for ethyl acetate
Ethyl acetate

Ethyl acetate is the organic compound with the formula CH3COOCH2CH3. This colorless liquid has a characteristic sweet smell like certain glues or nail polish removers, in which it is used....
. Ac is also the symbol for the chemical element
Chemical element

A chemical element is a type of atom that is distinguished by its atomic number; that is, by the number of protons in its atomic nucleus. The term is also used to refer to a pure chemical Chemical substance composed of atoms with the same number of protons....
 actinium
Actinium

Actinium is a radioactive chemical element with the symbol Ac and atomic number 89, which was discovered in 1899. It was the first Primordial element to be isolated, although polonium, radium and radon were observed before, but not isolated until 1902....
, 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
Conjugate acid

Within the Johannes Nicolaus Br?nsted-Martin Lowry theory of acid-base reaction theories, a conjugate acid is the acid member, HX, of a pair of two compounds that transform into each other by gain or loss of a proton....
 of acetic acid
Acetic acid

Acetic acid, CH3COOH, also known as ethanoic acid, is an organic acid which gives vinegar its sour taste and pungent smell. Pure, water-free acetic acid is a colourless liquid that absorbs water from the environment , and freezes at 16.7 Celsius to a colourless crystalline solid....
. 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
Substituent

In organic chemistry, a substituent is an atom or group of atoms substituted in place of a hydrogen atom on the parent chain of a hydrocarbon. The suffix -yl is used when naming organic compounds that contain a substituent....
.

Acetate can also refer to cellulose acetate
Cellulose acetate

Cellulose acetate, first prepared in 1865, is the acetate ester of cellulose. Cellulose acetate is used as a film base in photography, and as a component in some adhesives; it is also used as a synthetic fiber....
, especially fibres or other derived products such as the acetate disc
Acetate disc

An acetate disc is a type of gramophone record that is recorded directly from an audio source. Although acetates can be made from any audio source, they are typically produced from a Master recording tape recording for testing the quality of the tape-to-disc transcription....
 used in audio record production. Cellulose acetate can be found in many household products.

Structures


See also

  • Acetylation
    Acetylation

    Acetylation describes a reaction that introduces an acetyl functional group into an organic compound. Deacetylation is the removal of the acetyl group....
  • Cellulose acetate
    Cellulose acetate

    Cellulose acetate, first prepared in 1865, is the acetate ester of cellulose. Cellulose acetate is used as a film base in photography, and as a component in some adhesives; it is also used as a synthetic fiber....
  • Copper(II) acetate
    Copper(II) acetate

    Copper acetate, also referred to as cupric acetate, is the chemical compound with the chemical formula Copper2 where AcO- is acetate ....
  • Sodium acetate
    Sodium acetate

    Sodium acetate, is the sodium Salt of acetic acid. It is an inexpensive chemical produced in industrial quantities for a wide range of uses....