Ozone (O3) is an allotrope of oxygen, the molecule consisting of three oxygen atoms instead of the more stable diatomic O2.
Ozone is a powerful oxidizing agent.
It is present in low concentrations throughout the Earth's atmosphere.
It has many industrial and consumer applications as well as being used in ozone therapy.
Ozone may be formed from O2 by electrical discharges and by action of high energy electromagnetic radiation.
Certain electrical equipment generate significant levels of ozone.
The highest levels of ozone in the atmosphere are in the stratosphere, in a region also known as the ozone layer between about 10 km and 50 km above the surface.
Here it filters out the shorter wavelengths (less than 320 nm) of ultraviolet light (270 to 400 nm) from the Sun that would be harmful to most forms of life in large doses.
Sulfur dioxide Sulfur dioxide (also sulphur dioxide, sulfurous anhydride or sulphurous anhydride) has the chemical formula SO2. The gas is irritating to the lungs ... >
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Chloroform Chloroform, also known as trichloromethane and methyl trichloride, is a chemical compound with formula CHCl3. It does not support combustion in air, ... >
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Ethylene Ethylene (or IUPAC name ethene) is the simplest alkene hydrocarbon, consisting of four hydrogen atoms and two carbon atoms connected by a double ... >
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Citric acid Citric acid is a weak organic acid found in citrus fruits.
It is a natural preservative and is also used to add an acidic (sour) taste to foods and ... >
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Formaldehyde The chemical compound formaldehyde (also known as methanal), is a gas with a strong pungent smell. Formaldehyde readily results from the incomplete ... >
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Hydrogen chloride Hydrogen chloride, also known under the name HCl, is a highly corrosive and toxic colorless gas that forms white fumes on contact with ... >
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Sulfur hexafluoride Sulfur hexafluoride (SF6) is a gas whose molecules consist of one sulfur atom and six fluorine atoms. It is colorless, odorless, non-toxic, and ... >
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Methanol Methanol, also known as methyl alcohol or wood alcohol, is a chemical compound with chemical formula CH3OH. It is the simplest alcohol, and is a ... >
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Supercooling Supercooling is the process of chilling a liquid below its freezing point, without it becoming solid. A liquid below its freezing point will ... >
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Boiling point The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid. A ... >
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