239321

Sodium sulfite

ACS reagent, ≥98.0%

• Wzór liniowy: Na₂SO₃
• Numer CAS: 7757-83-7
• Masa cząsteczkowa: 126.04
• Numer WE: 231-821-4
• Numer MDL: MFCD00003503
• Kod UNSPSC: 12352302
• Identyfikator substancji w PubChem: 329752528
• NACRES: NA.21

Właściwości

• klasa czystości: ACS reagent
• Poziom jakości: 200
• 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

Opis

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.

Ta strona może zawierać tekst przetłumaczony maszynowo.

Informacja o środkach bezpieczeństwa

• Kod klasy składowania: 13 - Non Combustible Solids
• Klasa zagrożenia wodnego (WGK): WGK 1
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable