CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY
Chlorine (Cl) filled flask. Chlorine (atomic number 17) is a poisonous greenish-yellow gas about two and one-half times as dense as air. The element belongs to the halogen family and is used in water purification, as a disinfectant, as an antiseptic, and in the manufacture of bleaching powder, dyes, and explosives.
Model release not required. Property release not required.