“…In chemical industries, chlorine gas (Cl 2 ) is widely used as an industrial reagent in the manufacture of many products as presented in Figure 5, such as isocyanate epoxy resins, chloromethane compounds, silicone, polytetrafluoroethylene (PTFE), polyvinyl chloride (PVC), herbicide, pesticide, gasoline additives, antifreeze Electron affinity (eV) 3.75 5 Journal of Sensors compounds, and brake fluids, as well as in the production of prevalent metals such as magnesium (Mg), aluminium (Al), and platinum (Pt) in aeronautic industries [56,57]. Beyond that, Cl 2 is also used in electronic industries for the production of computer components and microprocessors [29], high-performance magnets [58], wire and insulation cables [59], residential and commercial air conditioning refrigerants [60], nuclear batteries, and hybrid car batteries [61,62]. The defence and security (law enforcement) industry also uses Cl 2 in various manufacturing processes to fabricate bulletresistant vests worn by military and police officers [63].…”