Chlorine (Cl₂)  Powerful Disinfectant and Industrial Chemical

Chlorine is a greenish-yellow gas with a strong, pungent odor. It’s a highly reactive halogen element widely used for water treatment, sanitation, and manufacturing.

Key Facts

• Atomic number: 17
• Physical state: Gas at room temperature (can be liquefied)
• Uses:
  • Disinfection of drinking water and swimming pools
  • Production of bleach and other disinfectants
  • Manufacturing of plastics like PVC (polyvinyl chloride)
  • Chemical synthesis in industry

Safety

• Toxic and corrosive; inhalation or contact can cause irritation and respiratory problems
• Must be handled with strict safety precautions in ventilated areas

Environmental Impact

• Used carefully in water treatment to kill bacteria and viruses
• Can form harmful byproducts if not managed properly