900503

Sigma-Aldrich

Sodium carbonate

anhydrous, powder or granules, free-flowing, Redi-Dri, ACS reagent, ≥99.5%

Synonym(s):
Calcined soda, Carbonic acid disodium salt, Soda ash
Linear Formula:
Na2CO3
CAS Number:
Molecular Weight:
105.99
Beilstein/REAXYS Number:
4154566
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

grade

ACS reagent
anhydrous

product line

Redi-Dri

assay

≥99.5%

form

powder or granules

quality

free-flowing

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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Packaging

500 g in poly bottle
1 kg in poly bottle
2.5, 5, 12 kg in poly drum

Biochem/physiol Actions

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

Legal Information

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

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

RIDADR

NONH for all modes of transport

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

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Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.
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