Structure via PubChem · Public domain (PubChem)
sodium thiosulfate
Sign in to saveAlso known as sodium thiosulfate (anhydrous), anhydrous sodium thiosulfate, sodium thiosulfate anhydrous, sodium oxide sulfide, sodium hyposulfite, disodium thiosulfate, thiosulfuric acid, disodium salt, sodium thiosulphate
chemical compound
Chemical data
- Formula
- Na2O3S2
- Molecular weight
- 158.11 g/mol
- SMILES
- [O-]S(=O)(=O)[S-].[Na+].[Na+]
- InChIKey
- AKHNMLFCWUSKQB-UHFFFAOYSA-L
- Polar surface area
- 66.6 Ų
- H-bond donors
- 0
- H-bond acceptors
- 4
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- chemical compound
- Has part
- sulfur
- Mass
- 157.908
- Image
- Sodium thiosulfate.jpg
- Has use
- food additive
Show 10 more facts
- route of administration
- intravenous infusion and defusion
- described by source
- Brockhaus and Efron Encyclopedic Dictionary
- Commons category
- Sodium thiosulfate
- chemical formula
- Na₂S₂O₃
- canonical SMILES
- [O-]S(=O)(=S)[O-].[Na+].[Na+]
- NCI Thesaurus ID
- C84170
- safety classification and labelling
- Regulation (EC) No. 1272/2008
- melting point
- 48.5
- decomposition point
- 300
- density
- 2.345
Sources (6)
via Wikidata · CC0
~7 min read
Encyclopedic overview
Sodium thiosulfate (sodium thiosulphate) is an inorganic compound with the formula Na2S2O3·xH2O. Typically it is available as the white or colorless pentahydrate (x = 5), which is a white solid that dissolves well in water. The compound is a reducing agent and a ligand, and these properties underpin its applications. Historically known as "hyposulphite of soda", sodium thiosulfate is used in medicine as a treatment for cyanide poisoning. It is also a reliable photographic fixer and played a key role in the development of photography in the 19th century.
Uses
Excerpted from Wikipedia’s “sodium thiosulfate” article, available under the CC BY-SA 4.0 licence.