Peroxydisulfuric acid
Names | |
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IUPAC names
μ-peroxido-bis(hydroxidodioxidosulfur) peroxydisulfuric acid | |
Other names
Persulfuric acid, Peroxodisulfuric acid | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider | |
PubChem CID |
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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 | |
Conjugate base | Peroxydisulfate |
Related compounds | |
Other cations |
Potassium persulfate Sodium persulfate Ammonium persulfate |
Related compounds |
Peroxymonosulfuric acid Pyrosulfuric acid |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
Infobox references | |
Peroxydisulfuric acid is the inorganic compound with the chemical formula H2S2O8. Also called Marshall's acid after its inventor Prof Hugh Marshall[1], it is a sulfur oxoacid.[2] 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:[3]
- 2ClSO3H + H2O2 → H2S2O8 + 2 HCl
See also
References
- ↑ https://books.google.co.uk/books?id=Fl4sdCYrq3cC&pg=PA244&lpg=PA244&dq=hugh++marshall+chemist&source=bl&ots=98PdDZMpAI&sig=g8tuJiXZF9tMyXM03Dt7vDkuHrM&hl=en&sa=X&ved=0ahUKEwiOwdDrtv3VAhXGsxQKHcvdALEQ6AEIPDAE#v=onepage&q=hugh%20%20marshall%20chemist&f=false
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 0-08-037941-9.
- ↑ Harald Jakob, Stefan Leininger, Thomas Lehmann, Sylvia Jacobi, Sven Gutewort, "Peroxo Compounds, Inorganic", Ullmann's Encyclopedia of Industrial Chemistry, Weinheim: Wiley-VCH, doi:10.1002/14356007.a19_177.pub2
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