Sodium thiosulfate is an inorganic salt composed of thiosulfate and sodium ion with the chemical formula Na₂S₂O₃. It is general reducing agent and useful sulfur source in synthetic chemistry

Application
Applied in a widely useful, thiosulfate-assisted, synthesis of a variety of diamine-CuCN complexes.[1]
Sodium thiosulfate can be used as a
 - Component in the synthesis of unsymmetrical aryl sulfides under aqueous conditions, where C–S–C bond formed in presence of other two components (alcohols and organohalides).
 - Reagent for the activation of carbon material.
 - Reagent in the synthesis of S-glycosyl thiosulfates (glycosyl bunte salts) by direct condensation of unprotected sugars using dehydrating agent DMC (2-chloro-1,3-dimethylimidazolinium chloride) in water-acetonitrile solvent mixture.
 - Reagent with alkyl halide in the synthesis of Bunte salts by SN2 mechanism using Cu catalyst.
 - Reagent in the synthesis of aryl thiols from aryl halides by palladium catalyzed cross-coupling reaction.

Specification
Sodium thiosulfate is:
 - Stable
 - Environmentally friendly
 - Odorless
 - Inexpensive.

pH : 6.0-8.5 (25°C, 50 mg/mL in H₂O)
Anion traces sulfide (S^2-) : ≤ 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.

Informations légales : ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany.

Poids	0,7 Kg   (700 g)
Volume	0,002 m³   (2000 cm³)
Largeur	0,1 m   (10 cm)
Longueur	0,1 m   (10 cm)
Hauteur	0,2 m   (20 cm)

Les dimensions, le poids et le volume sont bruts (emballage inclus)