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Encyclopedia > Hydroxyl radical

Hydroxide is a functional group consisting of oxygen and hydrogen:

-O−H

It has a charge of 1-.


The term hydroxyl group is used when the functional group -OH is counted as a substituent of an organic compound. Organic molecules containing a hydroxyl group are known as alcohols (CnH2n+1-OH).


Hydroxide is one of the simplest of the polyatomic ions. Hydroxide is a general term for any salt containing stoichiometric amounts of this polyatomic ion.


See also


  Results from FactBites:
 
Hydroxyl - Wikipedia, the free encyclopedia (387 words)
The hydroxyl radical, ·OH, is the neutral form of the hydroxide ion.
Hydroxyl radicals are highly reactive and consequently short lived, however they form an important part of radical chemistry.
The Hydroxyl radical is often referred to as the "detergent" of the troposphere because it reacts with many pollutants, often acting as the first step to their removal.
Le Magazine, December 1995 - The Dangerous Hydroxyl Radical (954 words)
The hydroxyl radical is a third generation species of radical which is derived from hydrogen peroxide (HZ02), which, in turn, is derived from the superoxide radical through the action of the enzyme superoxide dismutase.
Hydrogen peroxide is reduced to hydroxyl radicals by the enzymes glutathione peroxidase and catalase in the presence of transition metals such iron or copper.
The fact that melatonin is so much better at scavenging hydroxyl radicals than any other antioxidant is persuasive evidence that melatonin protects us against a wide variety of diseases and that its progressive depletion with advancing age contributes to aging and the diseases and disabilities associated with aging.
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