25059

Potassium acetate

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

• Formula condensata: CH₃COOK
• Numero CAS: 127-08-2
• Peso molecolare: 98.14
• Beilstein: 3595449
• Numero CE: 204-822-2
• Numero MDL: MFCD00012458
• Codice UNSPSC: 12352300
• ID PubChem: 329752771
• NACRES: NA.21

Proprietà

• Tensione di vapore: <0.0000001 hPa ( 25 °C)
• Livello qualitativo: 200
• Grado: puriss.
• Saggio: 99-101%
• Forma fisica: crystalline
• Qualità: meets analytical specification of Ph. Eur., BP, E261
• Impurezze: residual solvents, complies; ≤0.0004% heavy metals (as Pb); ≤0.05% KMnO₄ red. matter (as HCOOH)
• Perdita: ≤1% loss on drying, 150 °C, 2 h
• pH: 7.5-9 (20 °C, 5%)
• Densità: 1.57 g/cm³ at 25 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• Cationi in tracce: 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
• Stringa SMILE: [K+].CC([O-])=O
• InChI: 1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1; SCVFZCLFOSHCOH-UHFFFAOYSA-M

Descrizione

Descrizione generale

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.

Applicazioni

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.

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 13 - Non Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable