223530

Sodium carbonate

powder, ≥99.5%, ACS reagent

• Synonym(s): Calcined soda, Carbonic acid disodium salt, Soda ash
• Linear Formula: Na₂CO₃
• CAS Number: 497-19-8
• Molecular Weight: 105.99
• Beilstein/REAXYS Number: 4154566
• EC Number: 207-838-8
• MDL number: MFCD00003494
• UNSPSC Code: 12352302
• PubChem Substance ID: 24853390
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• agency: suitable for EPA 300; suitable for SM 2310; suitable for SM 2320; suitable for SM 4500 - NH3
• assay: ≥99.5%
• form: powder
• impurities: ≤0.005% silica; ≤0.01% insolubles
• loss: ≤1.0% loss on heating
• pH: 12 (25 °C, 106 g/L)
• mp: 851 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.001%; phosphate (PO₄^3-): ≤0.001%; sulfur compounds (as SO₄^2-): ≤0.003%
• cation traces: Ca: ≤0.03%; Fe: ≤5 ppm; K: ≤0.005%; Mg: ≤0.005%; heavy metals: ≤5 ppm (by ICP-OES)
• SMILES string: O=C(O[Na])O[Na]
• InChI: 1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
• InChI key: CDBYLPFSWZWCQE-UHFFFAOYSA-L

Description

General description

Sodium carbonate (soda ash) is an inorganic chemical compound. It is used in the synthesis of chemicals, detergent formulations, flue gas desulfurization, and paper and pulp production.

Application

Sodium carbonate can be used:

• As a catalyst in the aldol condensation of aldehydes with ketones in the synthesis of chalcone and azachalcone.
• As a pH stabilizer agent in the synthesis of FeO-NPs (iron oxide nanoparticles) in the presence of cymbopogon citratus as a reducing agent.
• As a base in the Pd-catalyzed Suzuki coupling reactions.
• As a base in the transition metal free Suzuki coupling reaction of aryl halides and arylboronic acids to form biaryls using water as a solvent and TBAB (tetrabutylammonium bromide) as a phase-transfer catalyst.

Biochem/physiol Actions

Buffer component, may be used for the removal of peripheral membrane proteins.

Other Notes

Go to Redi-Dri^™ Product Listing 791768

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H319
• pcodes: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Hazard Classifications: Eye Irrit. 2
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable