CaOCl2

from The Collaborative International Dictionary of English v.0.48

Chloride \Chlo"ride\, n. (Chem.)
   A binary compound of chlorine with another element or
   radical; as, chloride of sodium (common salt).
   [1913 Webster]

   {Chloride of ammonium}, sal ammoniac.

   {Chloride of lime}, bleaching powder; a grayish white
      substance, {CaOCl2}, used in bleaching and disinfecting;
      -- called more properly {calcium hypochlorite}. See
      {Hypochlorous acid}, under {Hypochlorous}.

   {Mercuric chloride}, corrosive sublimate.
      [1913 Webster]