236497

Potassium acetate

ACS reagent, ≥99.0%

• Linear Formula: CH₃COOK
• CAS Number: 127-08-2
• Molecular Weight: 98.14
• Beilstein: 3595449
• EC Number: 204-822-2
• MDL number: MFCD00012458
• UNSPSC Code: 12352106
• PubChem Substance ID: 329752436
• NACRES: NA.21

Properties

• grade: ACS reagent
• vapor pressure: <0.0000001 hPa ( 25 °C)
• Assay: ≥99.0%
• form: powder or crystals
• impurities: ≤0.005% insolubles
• pH: 6.5-9.0 (25 °C, 5%)
• solubility: water: soluble 98.2 g/L at 20 °C
• density: 1.57 g/cm³ at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.003%; phosphate (PO₄^3-): ≤0.001%; sulfate (SO₄^2-): ≤0.002%
• cation traces: Ca: ≤0.005%; Fe: ≤5 ppm; Mg: ≤0.002%; Na: ≤0.03%; heavy metals: ≤5 ppm (as Pb)
• suitability: complies for IR spectroscopy
• 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 material used as a base in organic synthesis. It can also be used as a buffer and neutralizing agent.

Application

Potassium acetate can be used:

• As a catalyst in the glycolysis of rigid polyurethane (PU) using DEG (diethylene glycol) as a solvent.
• As a nucleophilic catalyst for addition and polymerization reaction.
• As a nucleophilic catalyst in the regioselective reaction of epoxides with S-phenyl thioesters.
• As a promoter/base in transition metal-catalyzed reactions.
• As a source of methyl radical in photo-decarboxylative nucleophilic additions to phthalimides and source of potassium ion for templating reactions.

Potassium acetate can also be used as a base:

• In the Lossen rearrangement of hydroxamic acid.
• In the E₂ elimination′s reaction.
• In the fragmentation of α,α-dichloroketoesters and deprotonation of alcohols.

Other Notes

Go to Redi-Dri^™ Product Listing 791733

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable