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900502

Sigma-Aldrich

Potassium carbonate

anhydrous, free-flowing, −325 mesh, Redi-Dri™, reagent grade, ≥98%

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About This Item

Linear Formula:
K2CO3
CAS Number:
584-08-7
Molecular Weight:
138.21
Beilstein:
4267587
EC Number:
209-529-3
MDL number:
MFCD00011382
UNSPSC Code:
12352302
PubChem Substance ID:
24861531
NACRES:
NA.21

grade

anhydrous
reagent grade

Quality Level

100

product line

Redi-Dri™

Assay

≥98%

form

powder

quality

free-flowing

particle size

−325 mesh

pH

11-13 (25 °C, 138 g/L)

mp

891 °C (lit.)

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 base in the palladacycle catalyzed Heck reaction of chlorobenzene with styrene.

Application

Potassium carbonate was used in the following studies:
  • Synthesis of polysubstituted iodobenzene derivatives.
  • As base for the synthesis of high molecular weight homopolymers and copolymers derived from various bisphenols.
  • As base for the Suzuki coupling of aryl halides with aryl boronic acids.
  • As base for the Heck reaction of styrene and bromobenzene.

Legal Information

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

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319,H335

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

13 - Non Combustible Solids

WGK

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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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)
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.
Chelating N-heterocyclic carbene ligands in palladium-catalyzed Heck-type reactions.
Herrmann WA, et al.
Journal of Organometallic Chemistry, 557(1), 93-96 (1998)
Heck reaction using palladium complexed to dendrimers on silica.
Alper H, et al.
Canadian Journal of Chemistry, 78(6), 920-924 (2000)
K Y Foo et al.
Bioresource technology, 102(20), 9814-9817 (2011-08-30)
Rice husk (RH), an abundant by-product of rice milling, was used for the preparation of activated carbon (RHAC) via KOH and K(2)CO(3) chemical activation. The activation process was performed at the microwave input power of 600 W for 7 min.
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