H2B4O7

1 definition found

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

  Pyroboric \Pyr`o*bo"ric\, a. [Pyro- + boric.] (Chem.)
     Pertaining to derived from, or designating, an acid, {H2B4O7}
     (called also {tetraboric} acid), which is the acid ingredient
     of ordinary borax, and is obtained by heating boric acid.
     [1913 Webster]