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Chlorine (Cl2) is a gas that appears green/yellow and has a pungent, suffocating smell associated to the smell of bleach. Chlorine is in the ‘halogens’ gas family, alongside fluorine, bromine, and iodine. It is a toxic and corrosive gas that can irritate the human eyes and respiratory system. Chlorine doesn’t burn but supports combustion, similar to oxygen.
The creation of Chlorine dates back to the presence of rock salts (halogen salts) thousands of years ago, the main constituent of the salt dissolved in seawater. In Roman times, a chemist named Johann Rudolf Glauber, heated salt in a charcoal furnace and condensed the fumes to create a gas. This is a gas we know now as hydrochloric acid. After discovering hydrochloric acid, another chemist named Carl Wilhelm Scheele combined the newly found gas with black oxide with manganese and created a green/yellow gas. Although found by Carl, it was Humphry Davy - an English chemist who later named the discovery of the gas - Chlorine.
Applications used in
Assessment of the Dangerous Toxic Load (DTL) for Specified Level of Toxicity (SLOT) and Significant Likelihood of Death (SLOD)
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