In the first place, what is Chlorine ? It is part of the halogen group of elements that is known to be salt-forming. Its symbol is CL, atomic number 17, and its atomic weight is 35.45. You will not find Chlorine in a free state ( by itself ) in nature but always compounded with other elements like Sodium. It is extracted by electrolysis. Chlorine is described as a greenish-yellow gas, and it can be compounded with nearly all the other elements. We are warned that Chlorine is a respiratory irritant, irritating the mucus membranes and its liquid form burns the skin. Its good use includes, ironically, making safe drinking water. But, it is also used in many household products like paper, textiles, medicines, antiseptics, and plastics. However, Chlorine is most commonly used for sanitation, bleaching and disinfectants. In history, Chlorine was used as poison gas during World War One. So, what we have here is a pretty nifty agent of nature, protean in function and chameleon-like in form. C