222321

Sodium carbonate

ACS reagent, anhydrous, ≥99.5%, powder or granules

• Synonym(s): Calcined soda, Carbonic acid disodium salt, Soda ash
• Linear Formula: Na₂CO₃
• CAS Number: 497-19-8
• Molecular Weight: 105.99
• Beilstein: 4154566
• EC Number: 207-838-8
• MDL number: MFCD00003494
• UNSPSC Code: 12352302
• PubChem Substance ID: 24853323
• NACRES: NA.21
• grade: ACS reagent; anhydrous
• form: powder or granules

Properties

• grade: ACS reagent; anhydrous
• Quality Level: 200
• Agency: suitable for SM 4500 - NH3
• Assay: ≥99.5%
• form: powder or granules
• impurities: ≤0.005% silica; ≤0.01% insolubles
• loss: ≤1.0% loss on heating, 285 °C
• 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) is a white salt. It can be synthesized by the electrolysis of the molten sodium hydroxide or sodium chloride.[1]

Sodium carbonate is a water soluble inorganic salt commonly used as a weak base.[2] Its aqueous solution has the ability to uptake carbon dioxide.[3] It can also catalyze the conversion of sewage sludge to liquid fuels.[4]

Application

Sodium carbonate may be used as a reducing agent for the preparation of graphene sheets with good electrocapacity from graphene oxide dispersion.[5]
It may also be used in procedures for the synthesis of the following:

• Biaryls via palladium-catalyzed cross-coupling reaction of phenylboronicacid with haloarenes.[6]
• Chalcones and azachalcones via aldol condensation of aldehydes with ketones in aqueous medium.[7]
• Enynes via copper-catalyzed allylation of functionalized alkynes.[2]

Sodium carbonate may be used in the following studies:

• Determination of total polyphenolic index of wine products from grape by the Folin-Ciocalteu method.[8]
• To compose the ELISA (Enzyme-Linked Immunosorbent Assay) coating buffer.[9]
• Preparation of the antibody coating buffer for use in IGF-I kinase receptor activation assay (KIRA) assay.[10]

Biochem/physiol Actions

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

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H319
• Precautionary Statements: P264 - P280 - P305 + P351 + P338 - P337 + P313
• Hazard Classifications: Eye Irrit. 2
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable