239321

Sodium sulfite

ACS reagent, ≥98.0%

• Linear Formula: Na₂SO₃
• CAS Number: 7757-83-7
• Molecular Weight: 126.04
• EC Number: 231-821-4
• MDL number: MFCD00003503
• UNSPSC 코드: 12352302
• PubChem Substance ID: 329752528
• NACRES: NA.21

속성

• Grade: ACS reagent
• Quality Level: 200
• Agency: suitable for SM 5210
• 분석: ≥98.0%
• 형태: powder or crystals
• 불순물: Free acid, passes test; ≤0.005% insolubles; ≤0.03 meq/g Titr. free base
• pH: 9.0-10.5 (25 °C, 126 g/L)
• solubility: water: soluble 126 g/L at 20 °C
• 음이온 미량물: chloride (Cl^-): ≤0.02%
• 양이온 미량물: Fe: ≤0.001%; heavy metals (as Pb): ≤0.001%
• SMILES string: [Na+].[Na+].[O-]S([O-])=O
• InChI: 1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
• InChI key: GEHJYWRUCIMESM-UHFFFAOYSA-L

설명

일반 설명

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.

애플리케이션

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.

안전성 정보

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable