H2S2O3

1 definition found

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

  Thiosulphuric \Thi`o*sul*phur"ic\, a. [Thio- + sulphuric.]
     (Chem.)
     Of, pertaining to, or designating, an unstable acid,
     {H2S2O3}, analogous to sulphuric acid, and formerly called
     {hyposulphurous acid}.
     [1913 Webster]