Thiosulfate

Polyatomic ion (S2O3, charge –2)

Thiosulfate (IUPAC-recommended spelling; sometimes thiosulphate in British English) is an oxyanion of sulfur with the chemical formula S2O32−. Thiosulfate also refers to the compounds containing this anion, which are the salts of thiosulfuric acid, such as sodium thiosulfate (Na2S2O3) and ammonium thiosulfate ((NH4)2S2O3). Thiosulfate salts occur naturally.

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