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223484

Sigma-Aldrich

Sodium carbonate

ACS reagent (primary standard), anhydrous, 99.95-100.05% dry basis

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Synonym(s):
Calcined soda, Carbonic acid disodium salt, Soda ash
Linear Formula:
Na2CO3
CAS Number:
Molecular Weight:
105.99
Beilstein:
4154566
EC Number:
MDL number:
eCl@ss:
38020205
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent (primary standard)
anhydrous

Quality Level

Assay

99.95-100.05% dry basis

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 (PO43-): ≤0.001%
sulfur compounds (as SO42-): ≤0.003%

cation traces

Ca: ≤0.02%
Fe: ≤5 ppm
K: ≤0.005%
Mg: ≤0.004%
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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1 of 4

This Item
22232171345S2127
Sodium carbonate ACS reagent (primary standard), anhydrous, 99.95-100.05% dry basis

223484

Sodium carbonate

Essential Grade
Sodium carbonate ACS reagent, anhydrous, ≥99.5%, powder or granules

222321

Sodium carbonate

-
Sodium carbonate BioUltra, anhydrous, ≥99.5% (calc. on dry substance, T)

71345

Sodium carbonate

Premium Grade
Sodium carbonate ReagentPlus®, ≥99.5%

S2127

Sodium carbonate

-
assay

99.95-100.05% dry basis

assay

≥99.5%

assay

≥99.5% (calc. on dry substance, T)

assay

≥99.5%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

grade

ACS reagent (primary standard), anhydrous

grade

ACS reagent, anhydrous

grade

anhydrous

grade

-

pH

12 (25 °C, 106 g/L)

pH

12 (25 °C, 106 g/L)

pH

~12.0 (25 °C, 1 M in H2O)

pH

12 (25 °C, 106 g/L)

impurities

≤0.005% silica, ≤0.01% insolubles

impurities

≤0.005% silica, ≤0.01% insolubles

impurities

insoluble matter, passes filter test, ≤0.001% total nitrogen (N), ≤0.005% total sulfur (as SO4)

impurities

-

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 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

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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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)
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)
Efficient and clean aldol condensation catalyzed by sodium carbonate in water.
Zhang Z, et al.
Chemistry Letters (Jpn), 32(10), 966-967 (2003)
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)
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)

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