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Merck

239321

Sigma-Aldrich

Sodium sulfite

ACS reagent, ≥98.0%

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About This Item

Wzór liniowy:
Na2SO3
Numer CAS:
Masa cząsteczkowa:
126.04
Numer WE:
Numer MDL:
Kod UNSPSC:
12352302
Identyfikator substancji w PubChem:
NACRES:
NA.21

klasa czystości

ACS reagent

agency

suitable for SM 5210

Próba

≥98.0%

Postać

powder or crystals

zanieczyszczenia

Free acid, passes test
≤0.005% insolubles
≤0.03 meq/g Titr. free base

pH

9.0-10.5 (25 °C, 126 g/L)

rozpuszczalność

water: soluble 126 g/L at 20 °C

ślady anionów

chloride (Cl-): ≤0.02%

ślady kationów

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

ciąg 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

Klucz InChI

GEHJYWRUCIMESM-UHFFFAOYSA-L

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Opis ogólny

Sodium sulfite is a water-soluble inorganic salt that is commonly used as a reducing agent. It is also used for sulfonation and sulfomethylation reactions. Additionally, it is used in the textile industry as a bleaching, de-sulfurizing, and dechlorinating agent. As an oxygen and free chlorine scavenger, Na2SO3 is employed in the water treatment process. Sodium sulfite participates in the purification and isolation of aldehydes and ketones by forming adducts with them. Other uses include the production of sodium thiosulfate, detergents, and dyes.

Zastosowanie

Sodium sulfite can be used:
  • As a reducing agent in the hydroxylation of arylboronic acids and arylboronic esters into corresponding phenols.
  • In the transformation of α-amino alcohol methanesulfonate hydrochlorides to sodium α-amino alkanesulfonates.
  • As a SO2 precursor in the multigram synthesis of DABCO·(SO2)2 abbreviated as DABSO.

This page may contain text that has been machine translated.

Kod klasy składowania

13 - Non Combustible Solids

Klasa zagrożenia wodnego (WGK)

WGK 1

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable


Certyfikaty analizy (CoA)

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