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Sodium thiosulfate pentahydrate, ACS, 99.5-101.0%, Thermo Scientific Chemicals

Product Code. 11382468
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Quantity:
500 g
2 kg
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This item is not returnable. View return policy

Maximum level of impurities: Insoluble matter 0.005%, pH of a 5% solution 6.0-8.4 at 25°, Nitrogen compounds (as N) 0.002%, Sulfate and sulfite (as SO4) 0.1%, Sulfide P.T. (limit about 1ppm)

Sodium thiosulfate pentahydrate is used as an analytical reagent in laboratories. It is used in photographic processing and in gold extraction. Its alkylated derivatives, S-alkylthiosulfonates, are known as Bunte salts. It is involved in the preparation of thioglycolic acid. Furthermore, it is used to dechlorinate tap water, for removing free bromine from solutions and to check the pH of bleach solutions with liquid indicators. Other uses include tanning of leather; as an active component in hand warmers and chemical heating pads and as an anionic surfactant to aid in the dispersion of pharmaceutical preparations.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

TRUSTED_SUSTAINABILITY

Chemical Identifiers

CAS 10102-17-7
Molecular Formula H10Na2O8S2
Molecular Weight (g/mol) 248.172
MDL Number MFCD00149186
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+]

Specifications

Boiling Point 100°C-5H{2}O
Melting Point 48°C
Color Colorless
Physical Form Crystalline
Quantity 2 kg
Assay Percent Range 99.5-101.0%
Solubility Information Soluble in water and ammonia. Insoluble in alcohol and organic solvents.
Formula Weight 248.17 (158.10 Anhydrous)
Grade ACS
Odor Odorless
Appearance Colorless crystalline
Density 1.69
Chemical Name or Material Sodium thiosulfate pentahydrate, For ACS analysis
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RUO – Research Use Only

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