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S7143 Sigma-Aldrich

Sodium thiosulfate pentahydrate

ACS reagent, pH 6.0-8.4 (25 °C, 5% in solution), 99.5-101.0%

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Properties

grade   ACS reagent
assay   99.5-101.0%
impurities   ≤0.002% Nitrogen compounds (as N)
  ≤0.005% Insoluble matter
pH   6.0-8.4 (25 °C, 5% in solution)
anion traces   sulfate, sulfite (as SO42-): ≤0.1%
  sulfide (S2-): passes test (limit about 1 ppm)
SMILES string   O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=S
InChI   1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2
InChI key   PODWXQQNRWNDGD-UHFFFAOYSA-L
Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
1

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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