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791776

Potassium carbonate

Name: Potassium carbonate
Brand: SIGALD

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

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About This Item

Linear Formula:

K₂CO₃

CAS Number:

584-08-7

Molecular Weight:

138.21

UNSPSC Code:

12352302

NACRES:

NA.21

PubChem Substance ID:

329768290

EC Number:

209-529-3

Beilstein/REAXYS Number:

4267587

MDL number:

MFCD00011382

Assay:

≥99%

Grade:

ACS reagent, anhydrous

Form:

powder

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Properties

Quality Level

100

grade

ACS reagent, anhydrous

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 (PO₄^3-): ≤0.001%, sulfur compounds (as SO₄^2-): ≤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

Description

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

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pictograms

GHS07

signalword

Warning

hcodes

H315,H319,H335

pcodes

P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Articles

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Synthetic Approaches for Poly(Phenylene) Block Copolymers via Nickel Coupling Reaction for Fuel Cell Applications.

Adam F Nugraha et al.

Polymers, 12(7) (2020-07-24)

Several methods to synthesize poly(phenylene) block copolymers through the nickel coupling reaction were attempted to reduce the use of expensive nickel catalysts in polymerization. The model reaction for poly(phenylene) having different types of dichlorobenzene derivative monomers illustrated the potential use

The synthesis of [18F]pitavastatin as a tracer for hOATP using the Suzuki coupling.

Yusuke Yagi et al.

Organic & biomolecular chemistry, 13(4), 1113-1121 (2014-11-26)

Fluorine-18 labeled radiotracers, such as [(18)F]fluorodeoxyglucose, can be used as practical diagnostic agents in positron emission tomography (PET). Furthermore, the properties of pharmaceuticals can be enhanced significantly by the introduction of fluorine groups into their original structures, and significant progress

Length-dependent conductance of oligothiophenes.

Brian Capozzi et al.

Journal of the American Chemical Society, 136(29), 10486-10492 (2014-07-09)

We have measured the single-molecule conductance of a family of oligothiophenes comprising 1-6 thiophene moieties terminated with methyl-sulfide linkers using the scanning tunneling microscope-based break-junction technique. We find an anomalous behavior: the peak of the conductance histogram distribution does not

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Global Trade Item Number

SKU	GTIN
791776-12KG	04061832950594
791776-1KG	04061832950600
791776-100G	04061832950587
791776-2.5KG	04061832950617
791776-500G	04061832950624
791776-6X1KG	04061832950631