Chlorine gas is used in the manufacture of important compounds like bleaching powder, bromine, chloroform, carbon tetra chloride, phosjine, etc.
It is used for the purification of drinking water as a disinfectant.
Chlorine gas and chlorine water are used as a reagent in the laboratory.
It is also used in metal extraction and refining.
It is also used in making dyes and explosives.
It is used to make phosjin and musterd gas. Both these gases are very toxic. Musturd gas was used in the First World War. The composition formula of musturd gas is as follows –
Chlorine gas is used as a bleach for bleaching paper, clothing, etc.