SX0785

亚硫酸钠

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

• 線性公式: Na₂SO₃
• CAS號碼: 7757-83-7
• 分子量：: 126.04
• MDL號碼: MFCD00003503
• 分類程式碼代碼: 12352302
• 酶委員會索引編號: 231-821-4

屬性

• 品質等級: 200
• 化驗: ≥98.0% (iodometric)
• 形狀: powder
• 雜質: ≤0.005% Insoluble matter; ≤0.03 meq/g Titrable free base
• pH值: 8.8-10 (20 °C, 50 g/L in H₂O)
• mp: >500 °C (decomposition)
• 溶解度: 220 g/L
• 負離子痕跡: chloride (Cl^-): ≤0.02%
• 正離子痕跡: Fe: ≤0.001%; heavy metals (as Pb): ≤0.001%
• 運輸包裝: ambient
• 儲存溫度: room temp
• SMILES 字串: [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 密鑰: GEHJYWRUCIMESM-UHFFFAOYSA-L

描述

應用

• 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).

分析報告

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

安全資訊

• 儲存類別代碼: 13 - Non Combustible Solids
• 水污染物質分類（WGK）: WGK 1
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable