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Peroxide. In chemistry, peroxides are a group of compounds with the structure R−O−O−R, where the R's represent a radical (a portion of a complete molecule; not necessarily a free radical [ 1]) and O's are single oxygen atoms. [ 2][ 3] Oxygen atoms are joined to each other and to adjacent elements through single covalent bonds, denoted by ...
Peroxidase. Peroxidases or peroxide reductases ( EC number 1.11.1.x) are a large group of enzymes which play a role in various biological processes. They are named after the fact that they commonly break up peroxides, and should not be confused with other enzymes that produce peroxide, which are often oxidases .
Hydrogen peroxide is a chemical compound with the formula H 2 O 2.In its pure form, it is a very pale blue [5] liquid that is slightly more viscous than water.It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use and in higher concentrations for industrial use.
Magnesium peroxide (MgO 2) is an odorless fine powder peroxide with a white to off-white color. It is similar to calcium peroxide because magnesium peroxide also releases oxygen by breaking down at a controlled rate with water. Commercially, magnesium peroxide often exists as a compound of magnesium peroxide and magnesium hydroxide .
List of Hollows in. Bleach. October 2009. In the fictional Bleach manga / anime universe, a Hollow ( 虚 ホロウ, Horō) is a type of monstrous lost soul who can harm both ghosts and humans. Many of the series' antagonists are hollows. Some hollows possess the characteristics called Arrancars ( 破面 アランカル, Arankaru, from Spanish ...
The O−O bond length in peroxides is about 1.45 Å, and the R−O−O angles (R = H, C) are about 110° (water-like). Characteristically, the C−O−O−H dihedral angles are about 120°. The O−O bond is relatively weak, with a bond dissociation energy of 45–50 kcal/mol (190–210 kJ/mol), less than half the strengths of C−C , C−H ...
In organic chemistry, organic peroxides are organic compounds containing the peroxide functional group ( R−O−O−R′ ). If the R′ is hydrogen, the compounds are called hydroperoxides, which are discussed in that article. The O−O bond of peroxides easily breaks, producing free radicals of the form RO• (the dot represents an unpaired ...
General formulas of an organic peroxy acid (top) compared with a carboxylic acid (bottom). A peroxy acid (often spelled as one word, peroxyacid, and sometimes called peracid) is an acid which contains an acidic –OOH group. The two main classes are those derived from conventional mineral acids, especially sulfuric acid, and the peroxy ...