Sigma Aldrich 239321 Sodium sulfite ACS reagent, ≥98.0% 2.5 kg
Kategori
Marka
Stok Kodu
LB.SA.239321-2.5KG
Kısa Bilgi
Linear Formula: Na2SO3 CAS Number: 7757-83-7 Molecular Weight: 126.04 EC Number: 231-821-4 MDL number: MFCD00003503 PubChem Substance ID: 329752528 NACRES: NA.21
| Sigma Aldrich 239321 Sodium sulfite ACS reagent, ≥98.0% 2.5 kg |
|
Linear Formula: Na2SO3
CAS Number: 7757-83-7
Molecular Weight: 126.04
EC Number: 231-821-4
MDL number: MFCD00003503
PubChem Substance ID: 329752528
NACRES: NA.21 |
|
PROPERTIES
grade ACS reagent
Quality Level 200
Assay ≥98.0%
form powder or crystals
impurities
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
anion traces
chloride (Cl-): ≤0.02%
cation traces
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
DESCRIPTION
General description
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.
Application
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. |
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