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Cesium Carbonate

Other Names:

Caesium carbonate

Carbonic acid dicesium

General Information:


CAS Number: 534-17-8

Molecular Weight: 325.82 g/mol

Appearance: White powder

Chemical Formula: Cs2CO3

Melting Point: 610 C (decomposes)

One of the biggest advantages of cesium carbonate (Cs2CO3) is that it has a higher solubility in most solvents than K2CO3 or Na2CO3.

Common Uses:

Base for substitution reactions

Base for SNAr reactions

Base for palladium catalyzed reactions

Reagent/base for TBS deprotections


1) WO2016014463, page 169

2) WO2016014463, page 75

3) WO2012149280, page 80

4) WO2016011390, page 274

5) Wikipedia: Caesium carbonate (link)

6) Cesium carbonate (link)