Chlorine (Cl2)

A highly toxic, flammable, pale yellow gas with a sharp pungent smell. Chlorine attacks the respiratory system, eyes and skin. Denser than air, it tends to accumulate at the bottom of poorly verntilated spaces. Chlorine gas is a strong oxidizer, making it an essential compound in many industries. Chlorine is detectable with colorimetric detection tubes and dedicated electrochemical cells.