209619

Potassium carbonate

ACS reagent, ≥99.0%

• Formule linéaire : K₂CO₃
• Numéro CAS: 584-08-7
• Poids moléculaire : 138.21
• Numéro Beilstein : 4267587
• Numéro CE : 209-529-3
• Numéro MDL: MFCD00011382
• Code UNSPSC : 12352302
• ID de substance PubChem : 329752063
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent
• Niveau de qualité: 200
• Pureté: ≥99.0%
• Forme: powder or crystals
• Impuretés: ≤0.004% S compounds as (SO₄^2-) ; ≤0.005% silica; ≤0.01% insolubles
• pH: 11-13 (25 °C, 138 g/L)
• Pf: 891 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤0.003%; phosphate (PO₄^3-): ≤0.001%
• Traces de cations: Ca: ≤0.005%; Fe: ≤5 ppm; Mg: ≤0.002%; Na: ≤0.02%; heavy metals: ≤5 ppm (by ICP-OES)
• Chaîne SMILES: [K+].[K+].[O-]C([O-])=O
• InChI: 1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
• Clé InChI: BWHMMNNQKKPAPP-UHFFFAOYSA-L

Description

Description générale

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.

Autres remarques

Go to Redi-Dri^™ Product Listing 791766

Informations légales

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Informations sur la sécurité

• Pictogrammes: GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H315,H319,H335
• Conseils de prudence: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Classification des risques: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Organes cibles: Respiratory system
• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable