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Sodium Thiosulfate, 0.1M, Chem-Lab

Used as a redox titrant according to ASTM D-1159 standards. Sodium Thiosulfate, 0.1M, Chem-Lab is a solution of 24.8148g Na2S2O3·5H2O per 1L H2O. It is an inorganic compound with an excellent shelf life for use in iodometry, especially for chlorine determination.

Chemical Identifiers

CAS 10102-17-7, 7732-18-5
Molecular Formula H10Na2O8S2
Molecular Weight (g/mol) 248.172
InChI Key PODWXQQNRWNDGD-UHFFFAOYSA-L
Synonym sodium thiosulfate pentahydrate, ametox, sodium thiosulfate, pentahydrate, antichlor, tinver, disodium thiosulfate pentahydrate, unii-hx1032v43m, ccris 3952, thiosulfuric acid, disodium salt, pentahydrate, sodium hyposulfite pentahydrate
PubChem CID 61475
ChEBI CHEBI:32150
IUPAC Name disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate
SMILES O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
View More Specs

Description

Description

The thiosulfate anion reacts stoichiometrically with iodine in aqueous solution. Due to the quantitative nature of this reaction, sodium thiosulfate is used as a redox titrant in volumetric analysis and is a component of iodine clock experiments. It can be used to measure the oxygen content of water and to estimate the concentration of certain compounds in solution (hydrogen peroxide, chlorine). It also has many medicinal uses.
Specifications

Chemical Identifiers

10102-17-7, 7732-18-5
248.172
sodium thiosulfate pentahydrate, ametox, sodium thiosulfate, pentahydrate, antichlor, tinver, disodium thiosulfate pentahydrate, unii-hx1032v43m, ccris 3952, thiosulfuric acid, disodium salt, pentahydrate, sodium hyposulfite pentahydrate
CHEBI:32150
O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
H10Na2O8S2
PODWXQQNRWNDGD-UHFFFAOYSA-L
61475
disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate

Specifications

100°C
10102-17-7, 7732-18-5
H10Na2O8S2
Soluble in water
O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
248.172
CHEBI:32150
0.1mol/L
Sodium Thiosulfate Pentahydrate
48.3°C
Liquid
sodium thiosulfate pentahydrate, ametox, sodium thiosulfate, pentahydrate, antichlor, tinver, disodium thiosulfate pentahydrate, unii-hx1032v43m, ccris 3952, thiosulfuric acid, disodium salt, pentahydrate, sodium hyposulfite pentahydrate
PODWXQQNRWNDGD-UHFFFAOYSA-L
disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate
61475
248.18g/mol
1.00g/mL
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