25059

Potassium acetate

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

• Linear Formula: CH₃COOK
• CAS Number: 127-08-2
• Molecular Weight: 98.14
• Beilstein/REAXYS Number: 3595449
• EC Number: 204-822-2
• MDL number: MFCD00012458
• UNSPSC Code: 12352302
• PubChem Substance ID: 329752771
• NACRES: NA.21

Properties

• vapor pressure: <0.0000001 hPa ( 25 °C)
• grade: puriss.
• assay: 99-101%
• form: crystalline
• quality: meets analytical specification of Ph. Eur., BP, E261
• impurities: residual solvents, complies; ≤0.0004% heavy metals (as Pb); ≤0.05% KMnO₄ red. matter (as HCOOH)
• loss: ≤1% loss on drying, 150 °C, 2 h
• pH: 7.5-9 (20 °C, 5%)
• density: 1.57 g/cm³ at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• cation traces: 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
• SMILES string: [K+].CC([O-])=O
• InChI: 1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
• InChI key: SCVFZCLFOSHCOH-UHFFFAOYSA-M

Description

General description

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.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable