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236497

Sigma-Aldrich

Potassium acetate

ACS reagent, ≥99.0%

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About This Item

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:
12352106
PubChem Substance ID:
329752436
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

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 (PO43-): ≤0.001%
sulfate (SO42-): ≤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

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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

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Potassium acetate-catalyzed acetylation of wood: extraordinarily rapid acetylation at 120 C.
Obataya E and Minato K.
Wood Science and Technology, 42(7), 567-577 (2008)
Eagleson M.
Concise Encyclopedia Chemistry, 886-886 (1994)
Yuval Erez et al.
The journal of physical chemistry. A, 116(9), 2039-2048 (2012-02-10)
Steady-state and time-resolved emission techniques were employed to study the effect of acetate, a mild base, on the luminescence of curcumin in methanol and ethanol. We found that the steady-state emission intensity as well as the average fluorescence decay time
Jay D Gralla et al.
The EMBO journal, 25(7), 1515-1521 (2006-03-17)
Potassium glutamate accumulates upon hyper-osmotic shock and serves as a temporary osmoprotectant. This salt leads to transcriptional activation of sets of genes that allow the cell to achieve long-term adaptation to high osmolarity. The current experiments show that potassium glutamate
Susan Q Lang et al.
Rapid communications in mass spectrometry : RCM, 26(1), 9-16 (2012-01-05)
The stable isotopes of organic matter can provide valuable information on carbon cycling dynamics, microbial metabolisms, and past climates. Since bulk measurements may mask dynamic changes to critical portions of the organic pool, researchers are increasingly isolating individual compounds for
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