Sodium thiosulfate purum p.a., anhydrous, (RT) (250g)

SKU:
72049-250G
  • $79.40

    • Description

    72049 Sigma-Aldrich

    Sodium thiosulfate

    purum p.a., anhydrous, ≥98.0% (RT)

    • CAS Number 7772-98-7

       

    • Linear Formula Na2S2O3

       

    • Molecular Weight 158.11

       

    •  EC Number 231-867-5

       

    •  MDL number MFCD00003499

       

    •  PubChem Substance ID 329763718

       

    •  NACRES NA.21

    Description

    General description

    The product is anhydrous sodium thiosulfate (Na2S2O3). It can be obtained from Na2S2O3.10H2O by heating above 100°C. It can be synthesized from sodium sulfate.[1]

    Application

    Sodium thiosulfate (Na2S2O3) may be used in the following studies:
    • Industrial synthesis of methylene blue.[2]
    • Quantitative estimation of elemental iodine by titrimetry.[3]
    • Detection of trace levels of cysteine by employing triangular silver nanoplates (TAg-NPs).[4]

    Properties

    Related Categories Chemical Synthesis, Essential Chemicals, Inorganic Salts, Research Essentials, Salts,
    More...
    Quality Level   200
    grade   purum p.a.
    assay   ≥98.0% (RT)
    form   crystals
    pH   6.0-8.5 (25 °C, 50 mg/mL in H2O)
    anion traces   sulfide (S2-): ≤50 mg/kg
    cation traces   Ca: ≤50 mg/kg
      Cd: ≤50 mg/kg
      Co: ≤50 mg/kg
      Cu: ≤50 mg/kg
      Fe: ≤50 mg/kg
      K: ≤500 mg/kg
      Ni: ≤50 mg/kg
      Pb: ≤50 mg/kg
      Zn: ≤50 mg/kg
    SMILES string   [Na+].[Na+].[O-]S([O-])(=O)=S
    InChI   1S/2Na.H2O3S2/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
    InChI key   AKHNMLFCWUSKQB-UHFFFAOYSA-L