SODIUM DISULFITE (SODIUM METABISULFITE) (C005B-078606)

Analysis Note

Assay (iodometric): 98.0 - 100.5 %
Identity: passes test
Appearance of solution: passes test
pH-value (5 %; water): 3.5 - 5.0
Insoluble matter: ≤ 0.005 %
Chloride (Cl): ≤ 0.005 %
Thiosulfate (S₂O₃):
≤ 0.05 %
: passes test
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0001 %
Fe (Iron): ≤ 0.0005 %

Legal Information

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

Molecular Weight: 190.11. Empirical Formula: Na₂O₅S₂. grade: ACS reagent. Quality Level: 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. 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. Pictograms: GHS05,GHS07. Signal Word: Danger. Hazard Statements: H302 - H318. Precautionary Statements: P264 - P270 - P280 - P301 + P312 - P305 + P351 + P338 - P501. Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1. Supp Hazards: EUH031. Storage Class Code: 13 - Non Combustible Solids. WGK: WGK 1. Flash Point(F): Not applicable. Flash Point(C): Not applicable.