13471

Sodium sulfite

puriss., meets analytical specification of Ph. Eur., BP, NF, anhydrous, 95.0-100.0% (iodometric)

• Linear Formula: Na₂SO₃
• CAS Number: 7757-83-7
• Molecular Weight: 126.04
• EC Number: 231-821-4
• MDL number: MFCD00003503
• UNSPSC Code: 12352302
• PubChem Substance ID: 329750185
• NACRES: NA.22
• form: solid

Properties

• Quality Level: 100
• grade: puriss.
• Assay: 95.0-100.0% (iodometric)
• form: solid
• quality: meets analytical specification of Ph. Eur., BP, NF
• impurities: residual solvents, complies; ≤0.001% heavy metals (as Pb); ≤0.05% thiosulfate (S₂O₃)
• pH: 9.0-10.5 (25 °C, 126 g/L)
• anion traces: chloride (Cl^-): ≤200 mg/kg
• cation traces: Fe: ≤10 mg/kg; Se: ≤10 mg/kg; Zn: ≤10 mg/kg
• suitability: complies for appearance of solution
• 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

Safety Information

• Supplementary Hazards: EUH031
• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable