441902

Cesium carbonate

ReagentPlus^®, 99%

• Synonym(s): Carbonic acid dicesium
• Linear Formula: Cs₂CO₃
• CAS Number: 534-17-8
• Molecular Weight: 325.82
• Beilstein/REAXYS Number: 4546405
• EC Number: 208-591-9
• MDL number: MFCD00010957
• UNSPSC Code: 12352301
• PubChem Substance ID: 24867711
• NACRES: NA.22

Properties

• Quality Level: 200
• product line: ReagentPlus^®
• assay: 99%
• form: powder and chunks
• pH range: 10-13
• mp: 610 °C (dec.) (lit.)
• solubility: distilled water: soluble
• density: 4.072 g/cm³ at 20 °C
• SMILES string: [Cs+].[Cs+].[O-]C([O-])=O
• InChI: 1S/CH2O3.2Cs/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
• InChI key: FJDQFPXHSGXQBY-UHFFFAOYSA-L

Description

General description

Cesium carbonate is a powerful inorganic base widely used in organic synthesis. It is a potential chemoselective catalyst for the reduction of aldehydes and ketones to alcohols. It is employed as base for the Heck coupling reaction of 4-trifluoromethyl-1-chlorobenzene and aryl chlorides.

Application

Cesium carbonate can be used as a base in C-C and C-N cross-coupling reactions such as Suzuki−Miyaura, Heck, and Buchwald-Hartwig amination reactions. It is also used as a base in alkylation reactions.

Promotes the efficient O-alkylation of alcohols to form mixed alkyl carbonates.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS08,GHS05
• signalword: Danger
• hcodes: H318,H361f,H373
• pcodes: P202 - P260 - P280 - P305 + P351 + P338 - P308 + P313 - P405
• Hazard Classifications: Eye Dam. 1 - Repr. 2 - STOT RE 2 Oral
• target_organs: Kidney,Adrenal gland,Testes
• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves