Chlorine Facts
Chlorine Facts
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| Interesting Chlorine Facts: |
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| Chlorine has been in use for thousands of years in other forms, but it wasn't named until 1810 by Sir Humphry Davy. |
| Only fluorine is a lighter halogen than chlorine. |
| It is the second most common halogen on Earth. |
| The element itself is the 21st most common element, at about 170 parts per million. |
| It took almost 200 years from the discovery of chlorine gas for it to become recognized as an element. |
| Sodium chloride is the most common compound of chlorine, and it is abundant on Earth, especially in seawater. |
| Chlorine in its pure form is yellowish-green, but its common compounds are typically colorless. |
| Chlorine is capable of joining with practically every element, producing a chloride. |
| In many of these chloride forms, chlorine is vital for living organisms. |
| Highly concentrated pure chlorine is dangerous to living beings, though. |
| It is also creates a wide variety of oxides. |
| Chlorine is a widely used oxidizing agent, and is also potentially a reactive agent. |
| Chlorine has two stable isotopes, Cl-35 and Cl-37. |
| Its isotope Cl-36 is radioactive, and was first found produced in seawater surrounding nuclear test fires in the atmosphere. |
| Chlorine's Cl-36 is also used for dating ice samples and some rock samples. |
| Evidence shows that civilizations were intentionally using mined rock salt and oceanic salt over 5000 and 8000 years ago, respectively. |
| The chloralkai process has been used since 1892 to produce commercial elemental chlorine from NaCl and water. |
| Chlorine is used industrially and commercially to fight infection and bacteria, and for bleaching or whitening of textiles. |
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