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  1. Chlorine - Wikipedia

    Chlorine is a chemical element; it has symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties …

  2. Chlorine | Uses, Properties, & Facts | Britannica

    Dec 10, 2025 · chlorine (Cl), chemical element, the second lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table. Chlorine is a toxic, corrosive, …

  3. Chlorine | Chemical Emergencies | CDC

    Sep 6, 2024 · Chlorine is a liquid or gas with a strong, irritating smell. Signs and symptoms of chlorine exposure depend on how you were exposed. Get away from the area, get clean, and …

  4. Chlorine - Element information, properties and uses ...

    Element Chlorine (Cl), Group 17, Atomic Number 17, p-block, Mass 35.45. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

  5. Chlorine: Uses, Benefits, & Poisoning Risks - WebMD

    Nov 12, 2024 · Being exposed to chlorine liquid or gas poses many health risks. Learn about the symptoms and treatment options today.

  6. How to Tell If You Have Chlorine Poisoning & Treatment

    Dec 19, 2025 · Swallowing chlorine can harm your throat, esophagus, and digestive system. Inhaling chlorine can injure your nose, throat, and lungs, and getting it on your skin or eyes …

  7. Chlorine - New World Encyclopedia

    Chlorine (chemical symbol Cl, atomic number 17) is a nonmetal that belongs to a group of chemical elements known as halogens. At ordinary temperatures and pressures, pure chlorine …

  8. Periodic Table of Elements: Los Alamos National Laboratory

    Chlorine is a respiratory irritant. The gas irritates the mucus membranes and the liquid burns the skin. As little as 3.5 ppm can be detected as an odor, and 1000 ppm is likely to be fatal after a …

  9. Chlorine Poisoning: Symptoms, Diagnosis, and Treatments

    Chlorine poisoning can occur when you touch, swallow, or inhale chlorine. Chlorine reacts with water outside of the body and on mucosal surfaces inside your body — including the water in …

  10. Chlorine: 5 Side Effects and Poisoning Risks To Know - Health

    Jul 15, 2025 · Chlorine side effects may include a skin rash, dry skin, eye irritation, and lightened hair. In severe cases, chlorine may cause respiratory symptoms.