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209619

Sigma-Aldrich

Potassium carbonate

ACS reagent, ≥99.0%

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About This Item

Linear Formula:
K2CO3
CAS Number:
584-08-7
Molecular Weight:
138.21
Beilstein/REAXYS Number:
4267587
EC Number:
209-529-3
MDL number:
MFCD00011382
UNSPSC Code:
12352302
PubChem Substance ID:
329752063
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

assay

≥99.0%

form

powder or crystals

impurities

≤0.004% S compounds as (SO42-)
≤0.005% silica
≤0.01% insolubles

pH

11-13 (25 °C, 138 g/L)

mp

891 °C (lit.)

anion traces

chloride (Cl-): ≤0.003%
phosphate (PO43-): ≤0.001%

cation traces

Ca: ≤0.005%
Fe: ≤5 ppm
Mg: ≤0.002%
Na: ≤0.02%
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

[K+].[K+].[O-]C([O-])=O

InChI

1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2

InChI key

BWHMMNNQKKPAPP-UHFFFAOYSA-L

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General description

Potassium carbonate is an inorganic base. It participates as a base in the palladacycle catalyzed Heck reaction of chlorobenzene with styrene. Addition of amino acids (glycine, sarcosine and proline) to K2CO3 (solvent) promotes the absorption of CO2.

Application

Potassium carbonate has been used in the preparation of disulfonated bis[4-(3-aminophenoxy)phenyl]sulfone, a disulfonated diamine monomer.
It may be used in the following studies:
  • As a reagent in the synthesis of polysubstituted iodobenzene derivatives.
  • As a base for the synthesis of high molecular weight homopolymers and copolymers derived from various bisphenols.
  • As a base for the Suzuki coupling of aryl halides with aryl boronic acids.
  • The Heck reaction of styrene and bromobenzene.

Other Notes

Go to Redi-Dri™ Product Listing 791766

Legal Information

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

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

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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A kinetic study of CO2 capture with potassium carbonate solutions promoted with various amino acids: glycine, sarcosine and proline.
Thee H, et al.
International Journal of Greenhouse Gas Control, 20, 212-222 (2014)
Robert Möckel et al.
Organic letters, 17(7), 1644-1647 (2015-03-21)
The cobalt-catalyzed Diels-Alder reaction of trimethylsilyl-substituted alkynes with 1,3-dienes led to dihydroaromatic intermediates which were transformed into iodobenzene derivatives. For this transformation, the dihydroaromatic intermediates had to be oxidized and the trimethylsilyl-substituted arene had to undergo a silicon-iodine exchange reaction.
Synthesis, kinetic observations and characteristics of polyarylene ether sulphones prepared via a potassium carbonate DMAC process.
Viswanathan R, et al.
Polymer, 25(12), 1827-1836 (1984)
Chelating N-heterocyclic carbene ligands in palladium-catalyzed Heck-type reactions.
Herrmann WA, et al.
Journal of Organometallic Chemistry, 557(1), 93-96 (1998)
Polyamide interfacial composite membranes prepared from m-phenylene diamine, trimesoyl chloride and a new disulfonated diamine.
Xie W, et al.
Journal of Membrane Science, 403, 152-161 (2012)
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