Names | |
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IUPAC names
μ-peroxido-bis(hydroxidodioxidosulfur)
peroxydisulfuric acid |
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Other names
Persulfuric acid, Peroxodisulfuric acid
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Identifiers | |
13445-49-3 | |
ChEBI | CHEBI:29268 |
ChemSpider | 22822 |
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Jmol interactive 3D | Image |
PubChem | 24413 |
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Properties | |
H2O8S2 | |
Molar mass | 194.13 g·mol−1 |
Appearance | Colourless solid |
Melting point | 65 °C (149 °F; 338 K) (decomposes) |
soluble | |
Related compounds | |
Other cations
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Potassium persulfate Sodium persulfate Ammonium persulfate |
Related compounds
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Peroxymonosulfuric acid Pyrosulfuric acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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verify (what is ?) | |
Infobox references | |
Peroxydisulfuric acid is the inorganic compound with the chemical formula H2S2O8. Also called Marshall's acid, it is sulfur oxoacid.[1] In structural terms it can be written HO3SOOSO3H. It contains sulfur in its +6 oxidation state and a peroxide group. Its salts, commonly known as persulfates, are industrially important as powerful oxidizing agents.
The acid is prepared by the reaction of chlorosulfuric acid with hydrogen peroxide:[2]
- 2ClSO3H + H2O2 → H2S2O8 + 2 HCl
See also
References
- ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0080379419.
- ^ Harald Jakob, Stefan Leininger, Thomas Lehmann, Sylvia Jacobi, Sven Gutewort (2005), "Peroxo Compounds, Inorganic", Ullmann's Encyclopedia of Industrial Chemistry, Weinheim: Wiley-VCH, doi:10.1002/14356007.a19_177.pub2