It has been suggested that thiosulfate ion be merged into this article or section. (Discuss)

The structure of the thiosulfate anion

A ball-and-stick model of the thiosulfate anion

Thiosulfate is the oxoanion S₂O₃²⁻. Thiosulfates are only stable in neutral or alkaline solutions, but not in acidic solutions, due to decomposition to sulfite and sulfur, the sulfite being dehydrated to sulfur dioxide: Image File history File links Please see the file description page for further information. ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... Image File history File links Size of this preview: 738 × 600 pixel Image in higher resolution (1100 × 894 pixel, file size: 62 KB, MIME type: image/png) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Thiosulfate ... Image File history File links Size of this preview: 738 × 600 pixel Image in higher resolution (1100 × 894 pixel, file size: 62 KB, MIME type: image/png) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Thiosulfate ... Image File history File links Size of this preview: 540 × 600 pixel Image in higher resolution (990 × 1100 pixel, file size: 108 KB, MIME type: image/png) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Thiosulfate ... Image File history File links Size of this preview: 540 × 600 pixel Image in higher resolution (990 × 1100 pixel, file size: 108 KB, MIME type: image/png) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Thiosulfate ... armchair conformational isomerism of Cyclohexane. ... An oxyanion or oxoanion is a negatively charged polyatomic ion that contains oxygen. ... In chemistry, an alkali (from Arabic: al-qalyالقلوي, القالي ) is a basic, ionic salt of an alkali metal or alkali earth metal element. ... A space-filling model of the sulfite anion Sulfites (also sulphite) are compounds that contain the sulfite ion SO32−. They are often used as preservatives in wines (to prevent spoilage and oxidation), dried fruits, and dried potato products. ... General Name, Symbol, Number sulfur, S, 16 Chemical series nonmetals Group, Period, Block 16, 3, p Appearance lemon yellow Standard atomic weight 32. ... Sulfur dioxide (or Sulphur dioxide) has the chemical formula SO2. ...

S₂O₃²⁻(aq) + 2H⁺(aq) → SO₂(g) + S(s) + H₂O

This reaction is usually used to generate a temporary aqueous suspension to demonstrate the diffraction of light in physics. If the light is shone from below, blue light is seen from above, and orange from sideways^{[citation needed]}. Flour suspended in water In chemistry, a suspension is a colloidal dispersion (mixture) in which a finely-divided species is combined with another species, with the former being so finely divided and mixed that it doesnt rapidly settle out. ... The intensity pattern formed on a screen by diffraction from a square aperture Diffraction refers to various phenomena associated with wave propagation, such as the bending, spreading and interference of waves passing by an object or aperture that disrupts the wave. ... Prism splitting light Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context, electromagnetic radiation of any wavelength[1]. The elementary particle that defines light is the photon. ... Physics (Greek: (phúsis), nature and (phusiké), knowledge of nature) is the science concerned with the fundamental laws of the universe. ...

Thiosulfates react with halogens differently, which can be attributed the decrease of oxidizing power down the halogen group:

S₂O₃^2-(aq) + I₂(aq) → S₄O₆^2-(aq) + 2I^-(aq)

S₂O₃^2-(aq) + 4Br₂(aq) + 5H₂O(l) → 2SO₄^2-(aq) + 8Br^-(aq) + 10H⁺(aq)

S₂O₃^2-(aq) + 4Cl₂(aq) + 5H₂O(l) → 2SO₄^2-(aq) + 8Cl^-(aq) + 10H⁺(aq)

Uses of thiosulfates include the dissolving of silver salts from photographic film. In this context, sodium thiosulfate is often referred to as hypo. General Name, Symbol, Number silver, Ag, 47 Chemical series transition metals Group, Period, Block 11, 5, d Appearance lustrous white metal Atomic mass 107. ... A magnified crystal of a salt (halite/sodium chloride) Salt covering the floor of Bad Water in Death Valley, CA, the lowest point in the US. A salt, in chemistry, is any ionic compound composed of cations (positively charged ions) and anions (negative ions) so that the product is neutral... This article or section does not cite its references or sources. ... Sodium thiosulfate (Na2S2O3) is a colorless crystalline compound that is more familiar as the pentahydrate, Na2S2O3•5H2O, an efflorescent, monoclinic crystalline substance also called sodium hyposulfite or “hypo. ...

See Also

• Sodium thiosulfate