Sodium sulfite, 12K

SKU:
SX0785-5
  • $386.00

    • Description

    Sodium sulfite, 12K

    anhydrous, Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

    Linear Formula:
    Na2SO3
    CAS Number:
    7757-83-7
    Molecular Weight:
    126.04
    MDL number:
    MFCD00003503
    EC Index Number:
    231-821-4

    PROPERTIES

    Quality Level

    200

    assay

    ≥98.0% (iodometric)

    form

    powder

    impurities

    ≤0.005% Insoluble matter
    ≤0.03 meq/g Titrable free base

    pH

    8.8-10 (20 °C, 50 g/L in H2O)

    mp

    >500 °C (decomposition)

    solubility

    220 g/L

    anion traces

    chloride (Cl-): ≤0.02%

    cation traces

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

    shipped in

    ambient

    Storage temp.

    room temp

    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

    Application


      • Comparative Studies of Organic Contaminant Removal in Different Calcium Sulfite-Enhanced Oxidant/Fe(II) Systems: This research explores the effectiveness of sodium sulfite in enhancing the removal of organic contaminants through various oxidant systems. (Zhou et al., 2023).

      • Review of Traditional and Emerging Residual Chlorine Quenchers on Disinfection By-Products: Focuses on the role of sodium sulfite as a residual chlorine quencher in water treatment processes, analyzing its impact on reducing harmful by-products and enhancing water quality (Li et al., 2023).

      • Boosting the Photoelectrochemical Performance of Bismuth Vanadate Photoanode Through Homojunction Construction: Investigates how sodium sulfite can improve the photoelectrochemical properties of bismuth vanadate, significant for renewable energy applications, particularly in solar energy conversion (Wang et al., 2023).

      • Light-driven Oxidative Demethylation Reaction Catalyzed by a Rieske-type Non-heme Iron Enzyme Stc2: Demonstrates the use of sodium sulfite in enzymatic reactions to achieve oxidative demethylation, which is crucial for synthetic biology and enzyme engineering (Hu et al., 2022).

      • Preparation of Nano Disperse Dyes Using Sulfomethylated Lignin: Effects of Sulfonic Group Contents: Highlights the application of sodium sulfite in the preparation of environmentally friendly nano disperse dyes from lignin, emphasizing its potential in sustainable material science (Tang et al., 2023).

    Analysis Note

    Assay (iodometric): 98.0% min
    Chloride (Cl): 0.02% max
    Free acid: To pass test
    Heavy metals (as Pb): 0.001% max
    Insoluble matter: 0.005% max
    Iron (Fe): 0.001% max
    Titrable free base: 0.03meq/g max

    SAFETY INFORMATION

    Storage Class

    13 - Non Combustible Solids

    wgk_germany

    WGK 1

    flash_point_f

    Not applicable

    flash_point_c

    Not applicable