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S0505

Sigma-Aldrich

Sulfite de sodium

≥98%

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About This Item

Formule linéaire :
Na2SO3
Numéro CAS:
7757-83-7
Poids moléculaire :
126.04
Numéro CE :
231-821-4
Numéro MDL:
MFCD00003503
Code UNSPSC :
12352302
ID de substance PubChem :
329824427
Nomenclature NACRES :
NA.55

Agence

suitable for SM 5210

Niveau de qualité

100

Pureté

≥98%

Forme

powder or crystals

pH

9.0-10.5 (25 °C, 126 g/L)

Chaîne SMILES 

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

InChI

1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2

Clé InChI

GEHJYWRUCIMESM-UHFFFAOYSA-L

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Description générale

Sodium sulfite is a water-soluble inorganic salt that is commonly used as a reagent for sulfonation and sulfomethylation reactions. Additionally, it is also used as a bleaching, de-sulfurizing, and dechlorinating agent.

Application

Sodium sulfite can be used as:      
  • A source of sulfur dioxide (SO2) in the synthesis of 1,4 diazabicyclo[2.2.2]octane bis(sulfur dioxide) (DABSO).      
  • A reducing agent in the photocatalytic cyclization of 2-isocyanoaryl thioethers to synthesize 2-CF2/CF3-containing benzothiazoles in the presence of Ir-based catalyst.     
  • A reagent in the selective synthesis of 2-amino-1-iodonaphthalene from 2-naphthylamine in the presence of NaIO3/HCl.

In combination with carboxylic acids, it forms an effective system for the reductive acylation of aromatic nitro compounds.

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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