209619

Potassium carbonate

ACS reagent, ≥99.0%

• Formula condensata: K₂CO₃
• Numero CAS: 584-08-7
• Peso molecolare: 138.21
• Beilstein: 4267587
• Numero CE: 209-529-3
• Numero MDL: MFCD00011382
• Codice UNSPSC: 12352302
• ID PubChem: 329752063
• NACRES: NA.21

Proprietà

• Grado: ACS reagent
• Livello qualitativo: 200
• Saggio: ≥99.0%
• Forma fisica: powder or crystals
• Impurezze: ≤0.004% S compounds as (SO₄^2-) ; ≤0.005% silica; ≤0.01% insolubles
• pH: 11-13 (25 °C, 138 g/L)
• Punto di fusione: 891 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤0.003%; phosphate (PO₄^3-): ≤0.001%
• Cationi in tracce: Ca: ≤0.005%; Fe: ≤5 ppm; Mg: ≤0.002%; Na: ≤0.02%; heavy metals: ≤5 ppm (by ICP-OES)
• Stringa SMILE: [K+].[K+].[O-]C([O-])=O
• InChI: 1S/CH2O3.2K/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2; BWHMMNNQKKPAPP-UHFFFAOYSA-L

Descrizione

Descrizione generale

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.

Applicazioni

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.

Altre note

Go to Redi-Dri^™ Product Listing 791766

Note legali

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

Informazioni sulla sicurezza

• Pittogrammi: GHS07
• Avvertenze: Warning
• Indicazioni di pericolo: H315,H319,H335
• Consigli di prudenza: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Classi di pericolo: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Organi bersaglio: Respiratory system
• Codice della classe di stoccaggio: 13 - Non Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 1
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable