Sodium thiosulfate pentahydrate

• Catalog No.: S7143
• CAS Number: 10102-17-7
• M. F.: H10Na2O8S2
• M. W.: 248.18414
• Purity: 99.5-101.0%

SYNONYMS

• Title: 硫代硫酸钠 五水合物
• IUPAC name: disodium 1-oxo-1λ^6-disulfene-1,1-bis(olate) pentahydrate
• IUPAC Traditional name: disodium hypo pentahydrate

DATABASE IDS

• EC Number: 231-867-5
• CAS Number: 10102-17-7
• MDL Number: MFCD00149186

PROPERTIES

• Antion Traces: sulfate, sulfite (as SO42-): ≤0.1%
• Antion Traces: sulfide (S2-): passes test (limit about 1 ppm)
• Grade: ACS reagent
• Impurities: ≤0.002% Nitrogen compounds (as N)
• Impurities: ≤0.005% Insoluble matter
• Linear Formula: Na2S2O3 · 5H2O
• Purity: 99.5-101.0%
• pH: 6.0-8.4 (25 °C, 5% in solution)
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• German water hazard class: 1