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72049 Sigma-Aldrich

Sodium thiosulfate

purum p.a., anhydrous, ≥98.0% (RT)

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Properties

Related Categories Chemical Synthesis, Essential Chemicals, Inorganic Salts, Research Essentials, Salts,
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

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.

Application

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

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
RTECS 
XN6476000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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