NaOCl

from The Collaborative International Dictionary of English v.0.48

Clorox \Clorox\ n. [a trademark of the Clorox Co.]
   a commercial bleaching agent, consisting of a 5.25% aqueous
   solution of sodium hypochlorite ({NaOCl}). Other similar
   solutions of sodium hypochlorite are sometimes referred to as
   clorox. [trademark]

   Syn: bleach. [WordNet 1.5 +PJC]