... white powder, the effective chlorine is 60-70%. Bleaching powder: (Calcium hypochlorite: (Ca (ClO)2)Main composition: Ca(ClO)2, ... of textiles, and used as chlorating agent of rubbers.calcium hypochlorite also called as bleaching powder,CAS NO.7778-54 ... starch,disinfection of swimming pool chemical,dringking water, waste water.calcium hypochlorite is strong oxidizer,UN NO. 2880, dangerous chemical. ...