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Sodium Thiosulfate, 0.1M, Chem-Lab

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Quantity:
1L
10L
This item is not returnable. View return policy
10102-17-7, 7732-18-5
H10Na2O8S2
248.172
PODWXQQNRWNDGD-UHFFFAOYSA-L
sodium thiosulfate pentahydrate, ametox, sodium thiosulfate, pentahydrate, antichlor, tinver, disodium thiosulfate pentahydrate, unii-hx1032v43m, ccris 3952, thiosulfuric acid, disodium salt, pentahydrate, sodium hyposulfite pentahydrate
61475
CHEBI:32150
disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate
O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
This item is not returnable. View return policy
10102-17-7, 7732-18-5
H10Na2O8S2
248.172
PODWXQQNRWNDGD-UHFFFAOYSA-L
sodium thiosulfate pentahydrate, ametox, sodium thiosulfate, pentahydrate, antichlor, tinver, disodium thiosulfate pentahydrate, unii-hx1032v43m, ccris 3952, thiosulfuric acid, disodium salt, pentahydrate, sodium hyposulfite pentahydrate
61475
CHEBI:32150
disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate
O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]

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.

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.
Boiling Point 100°C
Melting Point 48.3°C
Quantity 1L
Formula Weight 248.18g/mol
Physical Form Liquid
Normality 0.1N (±0.0002, 20°C)
Solubility Soluble in water
Additional Information Acc. to ASTM D-1159
Composition 24.818g per 1L H2O
Concentration 0.1mol/L
Density 1.00g/mL
Chemical Name or Material Sodium Thiosulfate Pentahydrate
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