triprotic acid

triprotic acid

[tri¦präd·ik ′as·əd]
(chemistry)
An acid that has three ionizable hydrogen atoms in each molecule.
References in periodicals archive ?
It is well known that phosphoric acid is a triprotic acid with three ionisable hydrogen atoms.
Protonated 3,3-bis(1-methylimidazol-2-yl)propionate behaves as a triprotic acid ([H.sub.3][A.sup.2+]), where the differential log protonation constants in aqueous solution were found to be 2.18, 4.20, and 7.11.