thiosulfate ion
Sign in to saveThiosulfate (IUPAC-recommended spelling; sometimes thiosulphate in British English) is an oxyanion of sulfur with the chemical formula . Thiosulfate also refers to the compounds containing this anion, which are the salts of thiosulfuric acid, such as sodium thiosulfate () and ammonium thiosulfate (). Thiosulfate salts occur naturally. Thiosulfate rapidly dechlorinates water, and is used to halt bleaching in the paper-making industry. Thiosulfate salts are mainly used for dyeing in textiles, and bleaching of natural substances.
Article
9 sectionsContents
- Structure and bonding
- Formation
- Reactions
- Reactions with metals and metal ions
- Reactions with other salts
- Biochemistry
- Minerals
- Nomenclature
- References
Thiosulfate (IUPAC-recommended spelling; sometimes thiosulphate in British English) is an oxyanion of sulfur with the chemical formula . Thiosulfate also refers to the compounds containing this anion, which are the salts of thiosulfuric acid, such as sodium thiosulfate () and ammonium thiosulfate (). Thiosulfate salts occur naturally. Thiosulfate rapidly dechlorinates water, and is used to halt bleaching in the paper-making industry. Thiosulfate salts are mainly used for dyeing in textiles, and bleaching of natural substances.
==Structure and bonding== The thiosulfate ion is tetrahedral at the central S atom. The thiosulfate ion has C symmetry. The external sulfur atom has a valence of 2 while the central sulfur atom has a valence of 6. The oxygen atoms have a valence of 2. The distance of about in sodium thiosulfate is appropriate for a single bond. The distances are slightly shorter than the distances in sulfate.