Peroxydiphosphoric acid

Peroxydiphosphoric acid

Names
Other names peroxodiphosphoric acid
Identifiers
CAS Number	potassium salt: 15593-49-4
3D model (JSmol)	Interactive image
ChEBI	CHEBI:29284
ChemSpider	103142
PubChem CID	115278
CompTox Dashboard (EPA)	DTXSID701337409
InChI InChI=1S/H4O8P2/c1-9(2,3)7-8-10(4,5)6/h(H2,1,2,3)(H2,4,5,6) Key: NUGJFLYPGQISPX-UHFFFAOYSA-N InChI=1S/H4O8P2/c1-9(2,3)7-8-10(4,5)6/h(H2,1,2,3)(H2,4,5,6)
SMILES OP(=O)(O)OOP(=O)(O)O
Properties
Chemical formula	H4P2O8
Molar mass	193.97 g/mol
Related compounds
Related compounds	peroxymonophosphoric acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Peroxydiphosphoric acid ((HO₂P(O)O−OP(O)(OH)₂) is an oxyacid of phosphorus. Its salts are known as peroxydiphosphates. It is closely related to peroxymonophosphoric acid. These compounds (and their salts) are in turn related to the peroxydisulfuric acid and peroxysulfuric acid. These compounds are all colorless.^[1] In terms of structure, peroxydiphosphoric acid features two tetrahedral phosphorus centers linked by a peroxide group.