1.06657

Sodium sulfite

anhydrous for analysis EMSURE^® Reag. Ph Eur

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

속성

• Agency: reag. Ph. Eur.
• Quality Level: 300
• 제품 라인: EMSURE^®
• 분석: 97.0-100.5% (iodometric)
• 형태: powder
• 효능: 2610 mg/kg LD₅₀, oral (Rat)
• 불순물: ≤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)
• density: 2.63 g/cm³ at 20 °C
• 벌크 밀도: 1480 kg/m³
• 음이온 미량물: chloride (Cl^-): ≤0.02%; thiosulfate (S₂O₃^2-): ≤0.1%
• 양이온 미량물: As: ≤0.0001%; Cu: ≤0.0005%; Fe: ≤0.001%; Pb: ≤0.0005%; Se: ≤0.0004%; Zn: ≤0.001%; heavy metals (as Pb): ≤0.0005%
• 저장 온도: 2-30°C
• 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

애플리케이션

• Structural Properties and Hydrolysability of Paulownia elongate: The Effects of Pretreatment Methods Based on Acetic Acid and Its Combination with Sodium Sulfite or Sodium Sulfite: This study investigates how acetic acid and sodium sulfite pretreatments affect the structural properties and enzymatic hydrolysis of fast-growing Paulownia elongate. The combination significantly improved cellulose content and enzymatic digestibility, demonstrating potential for efficient sugar production (Wang et al., 2022).
• Effects of oxygen scavengers (Sodium sulfite, sodium bisulfite, sodium dithionite, and sodium metabisulfite) on growth and accumulation of biomass in the green alga Asterarcys quadricellulare: This research explores the impact of various oxygen scavengers on the biomass growth of the green alga Asterarcys quadricellulare. Sodium sulfite was one of the compounds tested for enhancing biomass accumulation (Sudha et al., 2022).
• A novel photo-assisted activated persulfate strategy for selective oxidation of ammonia nitrogen to dinitrogen using sodium silicate and sodium sulfite as regulators: This paper presents a new strategy for the selective oxidation of ammonia nitrogen to dinitrogen. Sodium sulfite was used as a regulator to enhance the efficiency of the process (Zhang et al., 2024).
• Effectiveness of sodium sulfite as an electron acceptor for bioenhanced treatment of salt-containing water produced from ASP flooding: This study examines the role of sodium sulfite as an electron acceptor in the bioenhanced treatment of saline water from alkaline-surfactant-polymer flooding. The findings suggest improved treatment efficiency with sodium sulfite addition (Zhang et al., 2021).

분석 메모

Assay (iodometric): 97.0 - 100.5 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
Free acid: passes test
Titrable free base: ≤ 0.03 meq/g
Chloride (Cl): ≤ 0.02 %
Thiosulfate (S₂O₃): ≤ 0.1 %
Heavy metals (as Pb): ≤ 0.0005 %
As (Arsenic): ≤ 0.0001 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.001 %
Pb (Lead): ≤ 0.0005 %
Se (Selenium): ≤ 0.0004 %
Zn (Zinc): ≤ 0.001 %

법적 정보

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

안전성 정보

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