20960

Cesium carbonate

purum p.a., ≥98.0% (T)

• 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: 329752062
• NACRES: NA.22

Properties

• grade: purum p.a.
• Quality Level: 100
• assay: ≥98.0% (T)
• loss: ≤2% loss on drying
• mp: 610 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤1000 mg/kg; sulfate (SO₄^2-): ≤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

Description

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

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