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Merck

217263

Sodium thiosulfate

ReagentPlus®, 99%

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About This Item

Linear Formula:
Na2S2O3
CAS Number:
7772-98-7
Molecular Weight:
158.11
NACRES:
NA.21
PubChem Substance ID:
329752199
UNSPSC Code:
12352302
EC Number:
231-867-5
MDL number:
MFCD00003499
Assay:
99%
Form:
powder, crystals or chunks

Key Documents

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InChI key

AKHNMLFCWUSKQB-UHFFFAOYSA-L

InChI

1S/2Na.H2O3S2/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

SMILES string

[Na+].[Na+].[O-]S([O-])(=O)=S

product line

ReagentPlus®

assay

99%

form

powder, crystals or chunks

pH

6.0-8.5 (20 °C, 50 g/L)

Quality Level

200

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General description

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.
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.

Features and Benefits

Sodium thiosulfate is:
  • Stable
  • Environmentally friendly
  • Odorless
  • Inexpensive.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

217263-BULK: + 217263-2.5KG-D: + 217263-5G: + 217263-250G-D: + 217263-5G-D: + 217263-2.5KG: + 217263-1KG: + 217263-250G: + 217263-1KG-D: + 217263-VAR-D: + 217263-VAR:

jan

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN9002
BCCN7403
BCCN3382
BCCM9793
MKCX4341

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Xin Yan Hou et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 125, 285-289 (2014-02-22)
In this study, triangular silver nanoplates (TAg-NPs) were used to detect trace Cysteine concentration in the presence of sodium thiosulfate (Na2S2O3). Study showed that the TAg-NPs could be gently etched by Cysteine with the concentration of 1.0×10(-7) mol L(-1) through
Hongda Wang et al.
Light, science & applications, 9, 118-118 (2020-07-21)
Early identification of pathogenic bacteria in food, water, and bodily fluids is very important and yet challenging, owing to sample complexities and large sample volumes that need to be rapidly screened. Existing screening methods based on plate counting or molecular
Eagleson M.
Concise Encyclopedia Chemistry, 648-648 (1994)
Eagleson M.
Concise Encyclopedia Chemistry, 1001-1001 (1994)
Eagleson M.
Concise Encyclopedia Chemistry, 542-542 (1994)
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