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Alfa Aesar™ Sodium thiosulfate, anhydrous, 99%

$46.85 - $170.27

Chemical Identifiers

Chemical Name or Material Sodium thiosulfate
CAS 7772-98-7
Name Note anhydrous
Molecular Formula Na2O3S2
Linear Formula Na2S2O3
Formula Weight 158.1
MDL Number MFCD00003499
Merck Index 14,8694
View More Specs
Products
Catalog Number Mfr. No. Quantity Price Quantity    

AAA176290E

  SDS
alfa aesar™
A176290E
2500g Each for $170.27

AAA1762936

  SDS
alfa aesar™
A1762936
500g Each for $46.85
Description & Specifications

Specifications

Formula Weight 158.1
Odor Odorless
RTECS Number XN6476000
Name Note anhydrous
MDL Number MFCD00003499
Merck Index 14,8694
Molecular Formula Na2O3S2
Quantity 2500g
Chemical Name or Material Sodium thiosulfate
TSCA TSCA
Linear Formula Na2S2O3
CAS 7772-98-7
Assay 99%

Applications
Sodium thiosulfate is used in volumetric analysis to estimate the concentration of certain compounds in solution (hydrogen peroxide) as well as chlorine content in bleaching powder and water. It is used to prepare S-alkylthiosulfonates. Furthermore, it is used in the tanning of leather and in photographic processing. It is used as an antidote to cyanide poisoning and acts as a safe disposal medium in chemistry laboratories when working with bromine, iodine and other strong oxidizers. It is an important component in hand warmers and heating pads.

Solubility
Soluble in water. Insoluble in alcohol.

Notes
Hygroscopic. Incompatible with strong acids, strong oxidizing agents, iodine and mercury.