Peroxydisulfuric acid

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Peroxydisulfuric acid
Peroxodischwefelsäure.svg
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IUPAC name μ-peroxido-bis(hydroxidodioxidosulfur)
peroxydisulfuric acid
Other names Persulfuric acid
Identifiers
InChI InChI=1/H2O8S2/c1-9(2,3)7-8-10(4,5)6/h(H,1,2,3)(H,4,5,6)
InChIKey JRKICGRDRMAZLK-UHFFFAOYAS
Standard InChI InChI=1S/H2O8S2/c1-9(2,3)7-8-10(4,5)6/h(H,1,2,3)(H,4,5,6)
Standard InChIKey JRKICGRDRMAZLK-UHFFFAOYSA-N
CAS number [13445-49-3]
PubChem 24413
ChEBI 29268
Properties[1][2]
Molecular formula H2O8S2
Molar mass 194.14 g mol−1
Appearance colourless solid, hygroscopic
Melting point

65 °C, 338 K, 149 °F decomp.

Solubility in water reacts
Solubility soluble in ethanol, diethyl ether, sulfuric acid
Hazards
EU index number not listed
Related compounds
Other compounds Potassium persulfate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Peroxydisulfuric is a sulfur oxoacid with the chemical formula H2S2O8. In structural terms it can be written HO3SOOSO3H.[1] It is one of a group of sulfur oxoacids, its salts, commonly known as persulfates, are industrially important but the acid itself is not. The salts contain the peroxydisulfate ion, S2O82−, with O–O = 131 pm and S–Oµ = 150 pm.[1]

References

  1. 1.0 1.1 1.2 Greenwood, Norman N.; Earnshaw, A. Chemistry of the Elements; Pergamon: Oxford, 1984; p 846. ISBN 0-08-022057-6.
  2. CRC Handbook of Chemistry and Physics, 62nd ed.; Weast, Robert C., Ed.; CRC Press: Boca Raton, FL, 1981; p B-154. ISBN 0-8493-0462-8.
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