209619

Potassium carbonate

ACS reagent, ≥99.0%

• Lineární vzorec: K₂CO₃
• Číslo CAS: 584-08-7
• Molekulová hmotnost: 138.21
• Beilstein/REAXYS Number: 4267587
• EC Number: 209-529-3
• MDL number: MFCD00011382
• UNSPSC Code: 12352302
• PubChem Substance ID: 329752063
• NACRES: NA.21

Vlastnosti

• grade: ACS reagent
• Quality Level: 200
• assay: ≥99.0%
• form: powder or crystals
• impurities: ≤0.004% S compounds as (SO₄^2-) ; ≤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%
• 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

Popis

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

Bezpečnostní informace

• 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_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable