Calcium hypochlorite is a chemical compound with the formula Ca (ClO) 2 It is generally used for water treatment and as a bleaching agent (bleaching powder). This chemical is considered relatively stable and has more than chlorine sodium hypochlorite (liquid chlorine).

　　It is manufactured by the calcium process and the sodium process. The calcium process proceeds as follows:

　　2 Ca(OH)2 + 2 Cl2 → Ca(ClO)2 + CaCl2 + 2 H2O

　　The sodium process proceeds as follows:

　　2 Ca(OH)2 + 3 Cl2 + 2 NaOH → Ca(ClO)2 + CaCl2 + 2 H2O + 2 NaCl

　　Bleaching powder is actually a mixture of calcium hypochlorite (Ca(ClO)2) and the basic chloride CaCl2, Ca(OH)2, H2O with some slaked lime, Ca(OH)2.