239321

Sulfito de sodio

ACS reagent, ≥98.0%

• Fórmula lineal: Na₂SO₃
• Número de CAS: 7757-83-7
• Peso molecular: 126.04
• Número CE: 231-821-4
• Número MDL: MFCD00003503
• Código UNSPSC: 12352302
• ID de la sustancia en PubChem: 329752528
• NACRES: NA.21

Propiedades

• grado: ACS reagent
• Nivel de calidad: 200
• Agency: suitable for SM 5210
• Análisis: ≥98.0%
• formulario: powder or crystals
• impurezas: Free acid, passes test; ≤0.005% insolubles; ≤0.03 meq/g Titr. free base
• pH: 9.0-10.5 (25 °C, 126 g/L)
• solubilidad: water: soluble 126 g/L at 20 °C
• trazas de anión: chloride (Cl^-): ≤0.02%
• trazas de catión: Fe: ≤0.001%; heavy metals (as Pb): ≤0.001%
• cadena 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
• Clave InChI: GEHJYWRUCIMESM-UHFFFAOYSA-L

Descripción

Descripción general

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.

Aplicación

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.

Información de seguridad

• Código de clase de almacenamiento: 13 - Non Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable