H4P2O7

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pyrophosphoric \Pyr`o*phos*phor"ic\, a. [Pyro- + phosphoric.]
     (Chem.)
     Pertaining to, or designating, an acid, {H4P2O7}, which is
     obtained as a white crystalline substance. Its salts are
     obtained by heating the phosphates.
     [1913 Webster]