Sodium thiosulfate

• Catalog No.: 13481
• CAS Number: 7772-98-7
• M. F.: Na2O3S2
• M. W.: 158.10774
• Purity: ≥98% (calc. to the dried substance)

SYNONYMS

• Title: 硫代硫酸钠
• IUPAC name: disodium 1-oxo-1λ^6-disulfene-1,1-bis(olate)
• IUPAC Traditional name: disodium hypo

DATABASE IDS

• EC Number: 231-867-5
• CAS Number: 7772-98-7
• MDL Number: MFCD00003499

PROPERTIES

• Antion Traces: chloride (Cl-): ≤1500 mg/kg
• Antion Traces: sulfate, sulfite (as SO42-): ≤1%
• Cation Traces: Fe: ≤50 mg/kg
• Impurities: ≤0.005% heavy metals (as Pb)
• Linear Formula: Na2S2O3
• Loss on Drying: ≤2% loss on drying, 105 °C, 2 h
• Purity: ≥98% (calc. to the dried substance)
• pH: 6.0-8.5 (20 °C, 5%)
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• RTECS: XN6476000
• German water hazard class: 1