Thiosulphate

1 definition found

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

  Thiosulphate \Thi`o*sul"phate\, n. (Chem.)
     A salt of thiosulphuric acid; -- formerly called
     {hyposulphite}.
     [1913 Webster]
  
     Note: The sodium salt called in photography by the name


           sodium hyposulphite, being used as a solvent for the
           excess of unchanged silver chloride, bromide, and
           iodide on the sensitive plate.
           [1913 Webster]