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Sigma-Aldrich

Sodium carbonate

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

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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
PubChem Substance ID:
24853323
NACRES:
NA.21

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 (PO43-): ≤0.001%
sulfur compounds (as SO42-): ≤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

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General description

Sodium carbonate (Soda) is a white salt. It can be synthesized by the electrolysis of the molten sodium hydroxide or sodium chloride.
Sodium carbonate is a water soluble inorganic salt commonly used as a weak base. Its aqueous solution has the ability to uptake carbon dioxide. It can also catalyze the conversion of sewage sludge to liquid fuels.

Application

Sodium carbonate may be used as a reducing agent for the preparation of graphene sheets with good electrocapacity from graphene oxide dispersion.
It may also be used in procedures for the synthesis of the following:
  • Biaryls via palladium-catalyzed cross-coupling reaction of phenylboronicacid with haloarenes.
  • Chalcones and azachalcones via aldol condensation of aldehydes with ketones in aqueous medium.
  • Enynes via copper-catalyzed allylation of functionalized alkynes.
Sodium carbonate may be used in the following studies:
  • Determination of total polyphenolic index of wine products from grape by the Folin-Ciocalteu method.
  • To compose the ELISA (Enzyme-Linked Immunosorbent Assay) coating buffer.
  • Preparation of the antibody coating buffer for use in IGF-I kinase receptor activation assay (KIRA) assay.

Biochem/physiol Actions

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

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H319

Hazard Classifications

Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Efficient and clean aldol condensation catalyzed by sodium carbonate in water.
Zhang Z, et al.
Chemistry Letters (Jpn), 32(10), 966-967 (2003)
Absorption of carbon dioxide into aqueous sodium hydroxide and sodium carbonate-bicarbonate solutions.
Hikita H, et al.
Chemical Engineering Journal, 11(2), 131-141 (1976)
A green and efficient method to produce graphene for electrochemical capacitors from graphene oxide using sodium carbonate as a reducing agent.
Jin Y, et al.
Applied Surface Science, 268, 541-546 (2013)
Liquid fuel production from sewage sludge by catalytic conversion using sodium carbonate.
Yokoyama S-Y, et al.
Fuel: The Science and Technology of Fuel and Energy, 66(8), 1150-1155 (1987)
Copper catalyzed regioselective coupling of allylic halides and alkynes promoted by weak inorganic bases.
Bieber LW and da Silva MF
Tetrahedron Letters, 48(40) , 7088-7090 (2007)
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