'H4P2O7' definitions:

Definition of 'H4P2O7'

From: 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]