Persulfate

A persulfate (sometimes known as peroxysulfate or peroxodisulfate)[1] is a compound containing the anions SO2−5 or S2O2−8.[2] The anion SO2−5 contains one peroxide group per sulfur center, whereas in S2O2−8, the peroxide group bridges the sulfur atoms. In both cases, sulfur adopts the normal tetrahedral geometry typical for the S(VI) oxidation state. These salts are strong oxidizers.[3][4]

## Contents

* 1 Ions
* 2 Acids
* 3 Example salts
* 4 References

## Ions

* Peroxomonosulfate ion, SO2−5
* Peroxydisulfate S2O2−8

## Acids

* Peroxymonosulfuric acid (Caro's acid), H2SO5
* Peroxydisulfuric acid, H2S2O8

## Example salts

* Sodium peroxomonosulfate, Na2SO5
* Potassium peroxymonosulfate, KHSO5
* Sodium persulfate (sodium peroxydisulfate), Na2S2O8
* Ammonium persulfate (ammonium peroxydisulfate), (NH4)2S2O8
* Potassium persulfate (potassium peroxydisulfate), K2S2O8

## References

1. ↑ Shafiee, Saiful Arifin; Aarons, Jolyon; Hamzah, Hairul Hisham (2018). "Electroreduction of Peroxodisulfate: A Review of a Complicated Reaction". Journal of the Electrochemical Society 165 (13): H785–H798. doi:10.1149/2.1161811jes. http://m.jes.ecsdl.org/content/165/13/H785.abstract?sid=3ddef67b-7f3b-49fa-93a7-c6eee812bfe4.
2. ↑ Harald Jakob, Stefan Leininger, Thomas Lehmann, Sylvia Jacobi, Sven Gutewort. "Ullmann's Encyclopedia of Industrial Chemistry". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a19_177.pub2.
3. ↑ "Geo-Cleanse International". Geocleanse.com. http://geocleanse.com/persulfate.asp.
4. ↑ Wacławek, S., Lutze, H. V., Grübel, K., Padil, V.V.T., Černík, M., Dionysiou, D.D. (2017) (2017-12-15). "Chemistry of persulfates in water and wastewater treatment: A review.". Chemical Engineering Journal 330: 44–62. doi:10.1016/j.cej.2017.07.132.

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