25059

Acetato de potássio

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

• Fórmula linear: CH₃COOK
• Número CAS: 127-08-2
• Peso molecular: 98.14
• Beilstein: 3595449
• Número CE: 204-822-2
• Número MDL: MFCD00012458
• Código UNSPSC: 12352302
• ID de substância PubChem: 329752771
• NACRES: NA.21

Propriedades

• pressão de vapor: <0.0000001 hPa ( 25 °C)
• grau: puriss.
• Ensaio: 99-101%
• Formulário: crystalline
• qualidade: meets analytical specification of Ph. Eur., BP, E261
• Impurezas: residual solvents, complies; ≤0.0004% heavy metals (as Pb); ≤0.05% KMnO₄ red. matter (as HCOOH)
• perda: ≤1% loss on drying, 150 °C, 2 h
• pH: 7.5-9 (20 °C, 5%)
• densidade: 1.57 g/cm³ at 25 °C (lit.)
• traços de ânion: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• traços de cátion: 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
• cadeia de caracteres SMILES: [K+].CC([O-])=O
• InChI: 1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
• chave InChI: SCVFZCLFOSHCOH-UHFFFAOYSA-M

Descrição

Descrição geral

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.

Aplicação

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.

Informações de segurança

• Código de classe de armazenamento: 13 - Non Combustible Solids
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable