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| | Articles - Chlorine (Site not responding. Last check: 2007-11-05) |
 | | As chlorine gas, it is greenish yellow, is two and one half times as heavy as air, has an intensely disagreeable suffocating odor, and is exceedingly poisonous. |
 | | Chlorine is an important chemical for some processes of water purification, in disinfectants, and in bleach. |
 | | Chlorine gas, also known as bertholite, was first used as a weapon against human beings in WWI on April 22nd, 1915. |
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