Assertion: pyrophosphoric acid | /r/HasProperty | pp i
Facets:
Source sentences:
text: Syntheses of two novel halomethanetriyltrisphosphonic acids are based on an improved preparation of methanetriyltrisphosphonic acid: pK a s for their second acidic dissociations show they are ‘supercharged’ relative to pyrophosphoric acid, PP i, while X-ray crystallographic analysis of fluoromethanetriyltrisphosphonic acid establishes its isosteric character relative to PP i .