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209619

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
UNSPSC Code:
12352302
NACRES:
NA.21
PubChem Substance ID:
329752063
EC Number:
209-529-3
Beilstein/REAXYS Number:
4267587
MDL number:
MFCD00011382
Assay:
≥99.0%
Grade:
ACS reagent
Form:
powder or crystals
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grade

ACS reagent

Quality Segment

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

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

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Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Codes

H315,H319,H335

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

209619-VAR: + 209619-500G: + 209619-12KG: + 209619-25KG: + 209619-1KG: + 209619-2.5KG: + 209619-4X2.5KG: + 209619-100G: + 209619-BULK:

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