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25059

Sigma-Aldrich

Acétate de potassium

puriss., meets analytical specification of Ph. Eur., BP, E261, 99-101%

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About This Item

Formule linéaire :
CH3COOK
Numéro CAS:
127-08-2
Poids moléculaire :
98.14
Numéro Beilstein :
3595449
Numéro CE :
204-822-2
Numéro MDL:
MFCD00012458
Code UNSPSC :
12352302
ID de substance PubChem :
329752771
Nomenclature NACRES :
NA.21

Pression de vapeur

<0.0000001 hPa ( 25 °C)

Qualité

puriss.
meets analytical specification of Ph. Eur., BP, E261

Pureté

99-101%

Forme

crystalline

Impuretés

residual solvents, complies
≤0.0004% heavy metals (as Pb)
≤0.05% KMnO4 red. matter (as HCOOH)

Perte

≤1% loss on drying, 150 °C, 2 h

pH

7.5-9 (20 °C, 5%)

Densité

1.57 g/cm3 at 25 °C (lit.)

Traces d'anions

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤100 mg/kg

Traces de cations

Al: ≤1 mg/kg
As: ≤2 mg/kg
Ca: ≤50 mg/kg
Cu: ≤4 mg/kg
Fe: ≤10 mg/kg
Mg: ≤30 mg/kg
Na: ≤5000 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

Chaîne SMILES 

[K+].CC([O-])=O

InChI

1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1

Clé InChI

SCVFZCLFOSHCOH-UHFFFAOYSA-M

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Description générale

Potassium acetate is a hygroscopic potassium salt. It can be prepared by the neutralization of acetic acid with potassium hydroxide or potassium carbonate. It can be used as nucleophilic catalyst for polymerization and addition reactions, source of acetate anion in substitution and addition reaction. It can be used as a base and promoter in various organic reactions.

Application

Potassium acetate is used as a catalyst:
  • In the preparation of 2-hexadecylfuran from furfuraldehyde and palmitic anhydride.
  • Potassium acetate can be used as a base:,In Lossen rearrangement of hydroxamic acids to carbamic acids.
  • In E2 elimination reactions.
  • In the formation of lactones from alkoxyamide substrates.

Potassium acetate is also used as a promoter:
  • In the borylation of aryl chlorides with bis(pinacolato)diboron in presence of palladium catalyst.
  • In the β-boration of α, β-unsaturated ketones.

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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