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explain the preparation of bleaching powder starting from sodium chloride

Bleaching powder manufacturing process Chlorine gas on passing through slaked lime at high temperature (400°c) gives Bleaching Powder:      ...

Bleaching powder manufacturing process

Chlorine gas on passing through slaked lime at high temperature (400°c) gives Bleaching Powder: 

         Ca(OH)2+cl2>Caocl2+H2O
                 
    

ProcessManufacture of bleaching powder can be done in two types of plants, namely, Hasenclever plant and Bachmann plant.




Bachmann process for bleaching powder

the plant consists of a vertical tower made of cast iron.  This is called chlorinating tower. two inlets are provided at the base of the tower for the entry of chlorine gas and hot air into the tower. a hopper is provided at the top of the tower for the introduction of slaked lime into the tower. the entire tower is made up of horizontal shelves provided with rotating rakes. dry slaked lime is introduced into the chlorinating tower through hopper.  Hot air and chlorine gas are sent into the tower through the inlets provided at the bottom of the plant. due to the movement of rotating rakes, slaked lime moves downwards, whereas chlorine gas along with hot air moves upwards.  this counter - current mechanism helps the thorough mixing up of chlorine gas with slaked lime which leads to completion of the reaction. 


Uses of bleaching powder class 10

  1. the most important use of chlorine is the bleaching of cotton, linen and wood pulp.  due to this bleaching property, bleaching powder finds its use in textile industry and manufacture of paper.
  2. Bleaching powder being a mild bleaching agent is best suited for bleaching of delicate articles, such as, silk, ivory etc. 
  3. Another important application of bleaching powder is its use as a disinfectant and germicide. 
  4. bleaching powder also finds its use in the manufacture of chloroform.





Preparation of bleaching powder formula

Preparation of bleaching powder formula is :  

Ca(OH)2+cl2>Caocl2+H2O








what are the materials used for the preparation of bleaching powder

The materials used for the preparation of bleaching powder

  1. Chlorine  cl
 2. Slaked lime  Ca(OH)2








 

Chemical name of Bleaching Powder

the chemical name of Bleaching Powder is calcium oxychloride.



Conclusion

In this post you were told about explain the preparation of bleaching powder starting from sodium chloride . I hope you have understood this.