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20960

Sigma-Aldrich

Cesium carbonate

purum p.a., ≥98.0% (T)

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Synonym(s):
Carbonic acid dicesium
Linear Formula:
Cs2CO3
CAS Number:
Molecular Weight:
325.82
Beilstein/REAXYS Number:
4546405
EC Number:
MDL number:
UNSPSC Code:
12352301
PubChem Substance ID:
NACRES:
NA.22

grade

purum p.a.

Quality Level

assay

≥98.0% (T)

loss

≤2% loss on drying

mp

610 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤1000 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤200 mg/kg
Na: ≤250 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

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

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Application

Catalyst for:
aerobic oxidation of primary alcohols
1,4-addition reactions
Reagent for:
Synthesis of phosphazene derivatives
Constrictive binding interactions
Intramolecular C-N cross coupling reactions
Dehydrohalogenative polycondensation
Promotes the efficient O-alkylation of alcohols to form mixed alkyl carbonates.

Other Notes

Used for preparing cesium carboxylates which react with halogenides to give esters and lactones ; Used for an analogous preparation of thio ethers

pictograms

Health hazardCorrosion

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Repr. 2 - STOT RE 2 Oral

target_organs

Kidney,Adrenal gland,Testes

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


Certificates of Analysis (COA)

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W.H. Kruizinga et al.
Journal of the American Chemical Society, 103, 5183-5183 (1981)
J.W. Huffman et al.
Synthetic Communications, 13, 553-553 (1983)
Aylin Uslu, et al
Inorgorganica Chimica Acta, 363, 3721-3726 (2010)
Xiao-Jin Wu, et al
Advanced Synthesis & Catalysis, 351, 3150-3156 (2009)
Yeon Sil Park, et al
Tetrahedron Letters, 51, 3956-3959 (2010)

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