1.06528

Natriumdisulfit

(sodium metabisulfite) for analysis EMSURE^® ACS,Reag. Ph Eur

• Synonym(e): Natriumdisulfit, Natriummetabisulfit, Natriumpyrosulfit, Pyrosulfit, Disulfit
• Empirische Formel (Hill-System): Na₂O₅S₂
• CAS-Nummer: 7681-57-4
• Molekulargewicht: 190.11
• UNSPSC Code: 12352302
• EC Index Number: 231-673-0
• NACRES: NA.21
• MDL number: MFCD00167602
• Assay: 98.0-100.5% (iodometric)
• Grade: ACS reagent
• Form: powder
• Solubility: 650 g/L

Eigenschaften

• grade: ACS reagent
• Quality Segment: 300
• agency: reag. Ph. Eur.
• product line: EMSURE^®
• assay: 98.0-100.5% (iodometric)
• form: powder
• potency: 1540 mg/kg LD₅₀, oral (Rat), >2000 mg/kg LD₅₀, skin (Rat)
• impurities: ≤0.005% Insoluble matter
• pH: 3.5-5 (20 °C, 50 g/L in H₂O)
• mp: 150 °C (decomposition)
• solubility: 650 g/L
• density: 2.36 g/cm³ at 20 °C
• bulk density: 1000‑1200 kg/m³
• anion traces: chloride (Cl^-): ≤0.005%, thiosulfate (S₂O₃^2-): ≤0.05%passes test
• cation traces: As: ≤0.0001%, Fe: ≤0.0005%, heavy metals (as Pb): ≤0.001%
• storage temp.: 2-30°C
• SMILES string: [Na+].[Na+].[S](=O)([O-])O[S](=O)[O-]
• InChI: 1S/2Na.H2O5S2/c;;1-6(2)5-7(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2
• InChI key: LDTLADDKFLAYJA-UHFFFAOYSA-L

Beschreibung

Analysis Note

Gehalt (iodometrisch): 98,0–100,5 %
Identität: entspricht
Aussehen der Lösung: entspricht
pH-Wert (5%; Wasser): 3,5–5,0 %
Unlösliche Anteile: ≤ 0,005 %
Chlorid (Cl): ≤ 0,005 %
Thiosulfat (S₂O₃):
≤ 0,05 %
: entspricht
Schwermetalle (als Pb): ≤ 0,001 %
As (Arsen): ≤ 0,0001 %
Fe (Eisen): ≤ 0,0005 %

Legal Information

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

Sicherheitshinweise

• pictograms: GHS05,GHS07
• signalword: Danger
• hcodes: H302,H318
• pcodes: P264 - P270 - P280 - P301 + P312 - P305 + P351 + P338 - P501
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1
• supp_hazards: EUH031
• Lagerklasse: 13 - Non Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable