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Safety Information

12669

Sigma-Aldrich

Potassium thiosulfate

≥95%

Synonym(s):

Dipotassium thiosulfate, Thiosulfuric acid (H2S2O3), potassium salt (1:2), Thiosulfuric acid, dipotassium salt

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About This Item

Linear Formula:
K2S2O3
CAS Number:
10294-66-3
Molecular Weight:
190.32
EC Number:
233-666-8
MDL number:
MFCD00036292
UNSPSC Code:
12352302
PubChem Substance ID:
57647019
NACRES:
NA.22

Quality Level

100

Assay

≥95%

form

solid

SMILES string

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

InChI

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

InChI key

FGRVOLIFQGXPCT-UHFFFAOYSA-L

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Application

Potassium thiosulfate can be used:
  • For the preparation of aqueous biphasic systems (ABS) for the extraction of organic compounds.
  • For the synthesis of polyacrylonitrile nanoparticles by dispersion/emulsion polymerization.
  • As a reagent for the pretreatment of graphite powder to synthesize graphene oxide from it by Hummers′ method.
  • As an initiator to synthesize organosilicon-based adsorbent to remove iron from crude phosphoric acid.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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.

JAN Code

12669-500G:
12669-BULK:
12669-100G:
12669-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
STBK5833
STBK3749
STBJ7017
STBJ1525
STBG7841

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Hierarchical Sulfur-Based Cathode Materials with Long Cycle Life for Rechargeable Lithium Batteries.
Wang J, et al.
ChemSusChem, 7(2), 563-569 (2014)
Ying Chen et al.
Ecotoxicology and environmental safety, 189, 109929-109929 (2019-11-14)
Sewage treatment plants effectively remove silver (Ag) from sewage. Sewage sludge can therefore be important Ag sinks, polluting the environment with this element. In this work, we report a nation-wide survey on the Ag content of sewage sludge in China
P Vecerka et al.
Veterinarni medicina, 29(5), 279-285 (1984-05-01)
A trial was conducted to study the sensitivity of the Aujeszky disease virus, present in the blood of pigs, to the effect of two preservatives: potassium thiosulphate ( K2S2O5 ) and hydrogen chloride (HCl). The sensitivity of the virus was
Jin-Feng Zhang et al.
Huan jing ke xue= Huanjing kexue, 29(5), 1239-1243 (2008-07-16)
The method of diuron [3-(3,4-dichlorophenyl)-1, 1-dimethylurea] degradation by persulfate oxidation activated by EDTA-ferrous ion in aqueous system was conducted. Based on both of the degradation performance and the operating costs, optimal reaction condition was proposed. Operating at K2S2O8 initial concentration
Chemical studies on the removal of iron from crude phosphoric acid using an organosilicon compound.
Soliman MH, et al.
Journal of Chemistry, 6(S1), S329-S341 (2009)
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