Question

How is bleaching powder produced ?

Answer 1

Sometimes called chloride of lime, it can be prepared by reacting calcium hydroxide or slaked lime, Ca(OH) 2 , with chlorine gas, Cl 2 . It is used as a strong bleachingagent, as a disinfectant, and in making Javelle water. Bleaching powder was firstproduced in 1799 by Charles Tennant in Glasgow, Scotland.

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Answer 2

The manufacture of sodium hypochlorite bleach requires several steps. All the steps can be carried out at one large manufacturing facility, or the chlorine and caustic soda can be shipped from different plants to the reactor site. Both chlorine and caustic soda are hazardous chemicals and are transported according to strict regulations.

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