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900505

Sigma-Aldrich

Sodium carbonate

anhydrous, free-flowing, Redi-Dri, ReagentPlus®, ≥99.5%

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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:
NACRES:
NA.21

grade

anhydrous

Quality Level

product line

ReagentPlus®
Redi-Dri

assay

≥99.5%

form

powder

quality

free-flowing

pH

12 (25 °C, 106 g/L)

pKa (25 °C)

(1) 6.37, (2) 10.25 (carbonic acid)

mp

851 °C (lit.)

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
13418SX0400SX0395
vibrant-m

900505

Sodium carbonate

-
vibrant-m

13418

Sodium carbonate

Essential Grade
vibrant-m

SX0400

Sodium carbonate

-
vibrant-m

SX0395

Sodium carbonate

-
assay

≥99.5%

assay

99.5-100.5% (calc. to the dried substance)

assay

≥99.9% dry basis (acidimetric)

assay

≥99.5% dry basis

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

200

grade

anhydrous

grade

-

grade

-

grade

-

pH

12 (25 °C, 106 g/L)

pH

12 (25 °C, 106 g/L)

pH

11.16 (25 °C, 4 g/L in H2O)

pH

11.16 (25 °C, 4 g/L in H2O)

mp

851 °C (lit.)

mp

851 °C (lit.)

mp

851 °C (lit.)

mp

851 °C (lit.)

Biochem/physiol Actions

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

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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