60109

Potassium carbonate

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

• Linear Formula: K₂CO₃
• CAS Number: 584-08-7
• Molecular Weight: 138.21
• Beilstein/REAXYS Number: 4267587
• EC Number: 209-529-3
• MDL number: MFCD00011382
• UNSPSC Code: 12352302
• PubChem Substance ID: 329758753
• NACRES: NB.24

Properties

• grade: ACS reagent; puriss. p.a.
• assay: ≥99.0% (T)
• form: powder or crystals
• impurities: ≤0.001% total nitrogen (N); ≤0.004% total sulfur (as SO₄)
• loss: ≤1% loss on drying, 300 °C
• pH: 11-13 (25 °C, 138 g/L)
• mp: 891 °C (lit.)
• anion traces: chloride (Cl^-): ≤30 mg/kg; phosphate (PO₄^3-): ≤10 mg/kg; silicate (as SiO₂): ≤50 mg/kg
• 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)
• 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.

Application

• Improved 2-pyridyl reductive homocoupling reaction using biorenewable solvent Cyrene (dihydrolevoglucosenone).: This study leverages potassium carbonate to enhance the homocoupling reaction of 2-pyridyl groups, showcasing its application in green chemistry for sustainable synthesis practices (Webb et al., 2023).


• Synthesis, Characterization and Biological Evaluation of Magnolol and Honokiol Derivatives with 1,3,5-Triazine of Metformin Cyclization.: Potassium carbonate is used as a base in the synthesis of novel triazine derivatives, demonstrating its role in the development of biologically active compounds in pharmaceutical research (Ren et al., 2020).


• Synthesis of (18) F-radiolabeled organophosphine fluorides for thiol-chemoselective peptide conjugation.: This article highlights the use of potassium carbonate in the preparation of radiolabeled compounds, essential for advancements in peptide conjugation and imaging techniques in molecular biology (Zhuang et al., 2020).


• Molten-salt treatment of waste biomass for preparation of carbon with enhanced capacitive properties and electrocatalytic activity towards oxygen reduction.: Potassium carbonate is employed in molten-salt treatments to convert biomass into high-performance carbon materials, illustrating its importance in energy storage and environmental applications (Lu et al., 2016).

Other Notes

Reagent for the decomposition of silicates by fusion

Safety Information

• 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