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209619

Sigma-Aldrich

Potassium carbonate

ACS reagent, ≥99.0%

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Linear Formula:
K2CO3
CAS Number:
Molecular Weight:
138.21
Beilstein/REAXYS Number:
4267587
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

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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This Item
60109347825P5833
Potassium carbonate ACS reagent, ≥99.0%

209619

Potassium carbonate

-
Potassium carbonate puriss. p.a., ACS reagent, anhydrous, ≥99.0% (T)

60109

Potassium carbonate

Essential Grade
Potassium carbonate reagent grade, ≥98%, powder, −325 mesh

347825

Potassium carbonate

-
Potassium carbonate BioXtra, ≥99.0%

P5833

Potassium carbonate

-
assay

≥99.0%

assay

≥99.0% (T)

assay

≥98%

assay

≥99.0%

Quality Level

200

Quality Level

-

Quality Level

-

Quality Level

-

grade

ACS reagent

grade

ACS reagent, puriss. p.a.

grade

reagent grade

grade

-

impurities

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

impurities

≤0.001% total nitrogen (N), ≤0.004% total sulfur (as SO4)

impurities

-

impurities

≤0.0005% Phosphorus (P), ≤0.1% Insoluble matter

cation traces

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

cation traces

Ag: ≤5 mg/kg, Al: ≤5 mg/kg, As: ≤0.5 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Tl: ≤5 mg/kg, Zn: ≤5 mg/kg, heavy metals: ≤5 ppm (by ICP-OES)

cation traces

-

cation traces

Al: ≤0.0005%, Ca: ≤0.001%, Cu: ≤0.0005%, Fe: ≤0.0005%, Mg: ≤0.0005%, NH4+: ≤0.05%, Na: ≤0.5%, Pb: ≤0.001%, Zn: ≤0.0005%

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.

Legal Information

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

pictograms

Exclamation mark

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


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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)
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)
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.
Heck reaction using palladium complexed to dendrimers on silica.
Alper H, et al.
Canadian Journal of Chemistry, 78(6), 920-924 (2000)

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