Sodium thiosulfate pentahydrate, ACS, 99.5-101.0%

Name: Sodium thiosulfate pentahydrate, ACS, 99.5-101.0%
SKU: 014518.36
Price: 49.60 USD

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) | CAS: 10102-17-7 | H10Na2O8S2 | 248.172 g/mol

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Catalog number 014518.36

also known as 014518-36

Price (USD)

49.60

Each

Quantity:

500 g

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Price (USD)

49.60

Each

Chemical Identifiers

CAS10102-17-7

IUPAC Namedisodium pentahydrate sulfanidesulfonate

Molecular FormulaH10Na2O8S2

InChI KeyPODWXQQNRWNDGD-UHFFFAOYSA-L

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

Specifications

Specification Sheet

Assay (unspecified)99.5-101.0% Na₂O₃S₂.5H₂O

Impurity contentSulfate and sulfite (as SO₄) 0.1%

Impurity contentSulfide P.T. (limit about 1ppm)

Insoluble material0.005%

pHof a 5% solution 6.0-8.4 at 25?

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.

RUO – Research Use Only