peroxide


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peroxide

(pərŏk`sīd), chemical compound containing two oxygen atoms, each of which is bonded to the other and to a radical or some element other than oxygen; e.g., in hydrogen peroxidehydrogen peroxide,
chemical compound, H2O2, a colorless, syrupy liquid that is a strong oxidizing agent and, in water solution, a weak acid. It is miscible with cold water and is soluble in alcohol and ether.
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, H2O2, the atoms are joined together in the chainlike structure H-O-O-H. Peroxides are powerful oxidizing agents. They are unstable, releasing oxygen when heated. Peroxides may be formed directly by reaction of an element or compound with oxygen. In dry, carbon-dioxide-free air, sodium or barium metal reacts to form its peroxide. In moist air, zinc metal is oxidized and hydrogen peroxide is formed. When a metal peroxide is treated with a dilute acid, a solution of hydrogen peroxide and a metal salt is formed. Ethersether,
any of a number of organic compounds whose molecules contain two hydrocarbon groups joined by single bonds to an oxygen atom. The most common of these compounds is ethyl ether, CH3CH2OCH2CH3
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 can react with oxygen from the air to form peroxides. This creates a special hazard, since the peroxides are often so unstable that they decompose explosively if heated.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Peroxide

 

any of a class of compounds in which atoms of oxygen are bonded to each other as well as to atoms of a more electropositive element. Examples are hydrogen peroxide (H—O—O—H) and barium peroxide

The term “peroxide” was adopted by the international chemical nomenclature; in the Russian nomenclature the word for peroxide is perekis’.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

peroxide

[pə′räk‚sīd]
(chemistry)
A compound containing the peroxy (‒O‒O‒) group, as in hydrogen peroxide.
(inorganic chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

peroxide

1. short for hydrogen peroxide esp when used for bleaching hair
2. any of a class of metallic oxides, such as sodium peroxide, Na2O2, that contain the divalent ion --O-O--
3. any of certain dioxides, such as manganese peroxide, MnO2, that resemble peroxides in their formula but do not contain the --O-O-- ion
4. any of a class of organic compounds whose molecules contain two oxygen atoms bound together. They tend to be explosive
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
In mice models, the researchers observed that bacteria manipulated to produce less hydrogen peroxide were unable to inactivate inflammasomes and therefore elicited a faster inflammatory response that effectively cleared the bacteria from mouse lungs.
In additional experiments, they treated pure collagen with hydrogen peroxide and then analyzed the protein using a gel electrophoresis laboratory technique that allows the protein to be visualized.
Hydrogen peroxide, Keenan explains, can pierce through the enamel and infiltrate dentin, which contains about 90-95 percent of the protein collagen.
The results of this testing demonstrate the full surface cure obtained when using Luperox Air XL organic peroxide to cure EPDM at 205[degrees]C in a hot air oven for 15 minutes.
The average operative times were 8.67[+ or -]0.48 (8.07-10.03) min in the hydrogen peroxide group and 12.30[+ or -]0.69 (11.03-14.02) min in the control group.
Erythromycin and Benzoyl Peroxide Topical Gel USP, 3%/5% is an US FDA-approved generic version of Valeant International's Benzamycin Gel, 3%/5%.
Minoux and Serfaty propsed that these free hydroxyl radicals (HO ), perhydroxyl radicals (HOO ), perhydroxyl anions (HOO), and superoxide anions (OO ), which are formed by hydrogen peroxide eventually attacks the organic pigmented molecules in tooth enamel by attacking double bonds of chromophore molecules within tooth tissues.
It's been common knowledge in medical circles that our bodies produce hydrogen peroxide, but new studies of human and animal cells are shedding new light on the critical role hydrogen peroxide plays in immunity, wound healing and even tumor biology.
TEHRAN (FNA)- Iranian researchers produced electromagnetic nanocomposite made of iron oxide and polyfuran magnetic nanoparticles and succeeded in the synthesis of electrochemical biosensor sensitive to hydrogen peroxide.
and CVS/pharmacy are carrying new Bausch + Lomb PeroxiClear 3% hydrogen peroxide cleaning and disinfecting solution, billed as the most advanced peroxide-based lens care solution to launch in years.