Caesium carbonate

Caesium carbonate
IUPAC name	Caesium carbonate
Other names	Cesium carbonate
Identifiers
InChI	InChI=1/CH2O3.2Cs/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
InChIKey	FJDQFPXHSGXQBY-NUQVWONBAO
Standard InChI	InChI=1S/CH2O3.2Cs/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
Standard InChIKey	FJDQFPXHSGXQBY-UHFFFAOYSA-L
CAS number	[534-17-8]
EC number	208-591-9
ChemSpider	10339
Properties
Chemical formula	Cs2CO3
Molar mass	325.82 g/mol
Appearance	white powder
Density	4.072 g/cm3
Melting point	610 °C decomp.
Solubility in water	260.5 g/100 mL (15 °C)
Solubility in ethanol	11 g/100 ml
Solubility in diethyl ether	soluble
Hazards
EU index number	not listed
Flash point	non-flammable
Related compounds
Other anions	Caesium bicarbonate
Other cations	Lithium carbonate Sodium carbonate Potassium carbonate Rubidium carbonate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Caesium carbonate is a white crystalline solid of formula Cs₂CO₃. It is more soluble in organic solvents than many other carbonates such as potassium carbonate, and therefore finds use as a base in organic chemistry.

Characteristic of carbonate salts, it reacts with protic acids to give carbon dioxide gas, water, and a caesium salt as follows:

Cs₂CO₃ + 2HCl → 2CsCl + H₂O + CO₂

Further reading

• Crich, David; Banerjee, Abhisek Expedient synthesis of threo-β-hydroxy-α-amino acid derivatives: phenylalanine, tyrosine, histidine, and tryptophan. J. Org. Chem. 2006, 71 (18), 7106–9. DOI: 10.1021/jo061159i.

External links

• Preparations from Organic Syntheses in which caesium carbonate appears
• Caesium carbonate factsheet from Chemetall GmbH