|Density (at 0oC)||0.002898 g/cm3|
|Boiling point||239.11 K|
|Melting point||171.7 K|
Chlorine is primarily used as a disinfectant. It's used in water, ranging from drinking water to swimming pools. It's used in almost every product that requires disinfecting at some stage of its production. Chlorine is also a component of polyvinyl chloride (PVC) plastic which is used for things like window frames, car interiors, electrical wiring insulation, and water pipes. Other chlorine compounds are used in the manufacturing process for bullet-proof vests, parachutes, cockpit canopies, and so on.
Chlorine is an element with many applications in chemistry. It's an oxidising agent and an excellent substitution element. In the past, chlorine was used to make chloroform and carbon tetrachloride (cleaning solvent). Chlorine gas is highly toxic and was used as a chemical weapon in the First World War.