1.06657

Sodium sulfite

anhydrous for analysis EMSURE^® Reag. Ph Eur

• Wzór liniowy: Na₂SO₃
• Numer CAS: 7757-83-7
• Masa cząsteczkowa: 126.04
• Numer MDL: MFCD00003503
• Kod UNSPSC: 12352302
• Numer indeksu EC: 231-821-4
• NACRES: NA.21

Właściwości

• agency: reag. Ph. Eur.
• Poziom jakości: 300
• linia produktu: EMSURE^®
• Próba: 97.0-100.5% (iodometric)
• Postać: powder
• siła działania: 2610 mg/kg LD₅₀, oral (Rat)
• zanieczyszczenia: ≤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)
• gęstość: 2.63 g/cm³ at 20 °C
• gęstość nasypowa: 1480 kg/m³
• ślady anionów: chloride (Cl^-): ≤0.02%; thiosulfate (S₂O₃^2-): ≤0.1%
• ślady kationów: As: ≤0.0001%; Cu: ≤0.0005%; Fe: ≤0.001%; Pb: ≤0.0005%; Se: ≤0.0004%; Zn: ≤0.001%; heavy metals (as Pb): ≤0.0005%
• temp. przechowywania: 2-30°C
• ciąg SMILES: [Na+].[Na+].[O-]S([O-])=O
• InChI: 1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
• Klucz InChI: GEHJYWRUCIMESM-UHFFFAOYSA-L

Opis

Zastosowanie

• 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).

Komentarz do analizy

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 %

Informacje prawne

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

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Informacja o środkach bezpieczeństwa

• Kod klasy składowania: 13 - Non Combustible Solids
• Klasa zagrożenia wodnego (WGK): WGK 1
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable