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243973

Sigma-Aldrich

Sodium bisulfite

ACS reagent

Synonyme(s) :

Sodium hydrogensulfite

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About This Item

Formule empirique (notation de Hill):
NaHSO3
Numéro CAS:
7631-90-5
Poids moléculaire :
104.06
Code UNSPSC :
12352302
ID de substance PubChem :
24854644
Nomenclature NACRES :
NA.21

Qualité

ACS reagent

Niveau de qualité

200

Forme

powder or crystals

Concentration

≥58.5% SO2

Impuretés

≤0.005% insolubles

pH

4.3 (10 g/L)

Traces d'anions

chloride (Cl-): ≤0.02%

Traces de cations

Fe: ≤0.002%
heavy metals (as Pb): ≤0.001%

Chaîne SMILES 

[Na+].OS([O-])=O

InChI

1S/Na.H2O3S/c;1-4(2)3/h;(H2,1,2,3)/q+1;/p-2

Clé InChI

DWAQJAXMDSEUJJ-UHFFFAOYSA-L

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Catégories apparentées

Description générale

Sodium bisulfite is a widely used industrial chemical as a reducing agent, catalyst, and preservative in pharmaceuticals and foods due to its antioxidative and antibacterial effects.
The aqueous solutions of sodium bisulfite are acidic in nature. Degradation of sodium bisulfite with acid forms sulfur dioxide gas.

Application

Sodium bisulfite (NaHSO3) has been used as a reagent to compose the immunoprecipitation (IP) buffer to chemically modify DNA and to synthesize arsenolipids (AsL).
It can also be used as a reagent during the synthesis of 5,6-dihydrouracil-6-sulfonate.
Sodium bisulfite can be used as:
  • A reagent to synthesize aldehyde-bisulfite adducts from aromatic and aliphatic aldehydes.
  • A catalyst in the solvent-free etherification of aromatic/aliphatic alcohols to synthesize symmetric and unsymmetric ethers via intermolecular dehydration.
  • An additive in the copper-catalyzed homocoupling of ketoxime carboxylates to synthesize symmetrical pyrroles.

Pictogrammes

Exclamation mark
GHS07

Mention d'avertissement

Warning

Mentions de danger

H302

Classification des risques

Acute Tox. 4 Oral

Risques supp

EUH031

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Certificats d'analyse (COA)

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The purpose of this study was to predict the stability of imipenem in a mixed infusion. The hydrolysis of imipenem in aqueous solution was found to be accelerated by pH, and by increasing concentrations of sodium bisulfite (SBS) and L-cysteine.
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