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791776

Sigma-Aldrich

Potassium carbonate

anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99%

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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
anhydrous

Quality Level

product line

Redi-Dri

assay

≥99%

form

powder

quality

free-flowing

impurities

≤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%
sulfur compounds (as SO42-): ≤0.004%

cation traces

Ca: ≤0.005%
Fe: ≤5 ppm
Mg: ≤0.002%
Na: ≤0.02%
heavy metals (as Pb): ≤5 ppm

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
209619P5833310263
vibrant-m

791776

Potassium carbonate

vibrant-m

209619

Potassium carbonate

vibrant-m

P5833

Potassium carbonate

vibrant-m

310263

Potassium carbonate

form

powder

form

powder or crystals

form

powder

form

solid

assay

≥99%

assay

≥99.0%

assay

≥99.0%

assay

99%

pH

11-13 (25 °C, 138 g/L)

pH

11-13 (25 °C, 138 g/L)

pH

11-13 (25 °C, 138 g/L)

pH

11-13 (25 °C, 138 g/L)

grade

ACS reagent, anhydrous

grade

ACS reagent

grade

-

grade

-

impurities

≤0.005% silica, ≤0.01% insolubles

impurities

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

impurities

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

impurities

-

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:
  • 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.
  • In the Heck reaction of styrene and bromobenzene.

Features and Benefits

  • Increased efficiency – Eliminate time and effort of loosening hardened powders
  • Safety – Avoid risks of using tools of force to break up clumps
  • Economy – Faster preparation and solvation increase productivity and reduce costs
  • Assured quality – Excellent, expert-tested quality with no anti-caking agents
  • Flexible volumes – Available from research amounts to scale-up quantities

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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