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Magnesium peroxide
FeS2structure.jpg
IUPAC name
Other names Magnesium dioxide, Magnesium bioxide, UN 1476
Identifiers
CAS number 1335-26-8
PubChem 159386
EC number 238-438-1
Properties
Molecular formula MgO2
Molar mass 56.3038 g/mol
Appearance White or off-white powder
Density 3 g/cm3
Melting point

223 °C

Boiling point

350 °C (decomp)

Solubility in water insoluble
Structure
Crystal structure Cubic, cP12
Space group Pa-3, No. 205
Hazards
R-phrases R8
S-phrases S17, S36
NFPA 704
NFPA 704.svg
0
2
1
OX
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Magnesium peroxide is a fine powder peroxide with a white to white-off color. It is similar to calcium peroxide because magnesium peroxide also releases oxygen by breaking down at a controlled rate with a hydrous fluid. Besides this it can be used in bleaching, disinfecting, and deodorizing.

In contact with water it decomposes by the reactions:

MgO2+ 2 H2O → Mg(OH)2 + H2O2
2 H2O2 → 2 H2O + O2

Applications

Magnesium peroxide being environmentally benign and its stable oxygen release are used widely in the cosmetic, agricultural, pharmaceutical, and environmental industries. It is used to reduce contaminant levels in groundwater. Magnesium peroxide is used in the bioremediation of contaminated soil and can improve the soil quality for plant growth and metabolism. It also used in the aquaculture industry for bioremediation.

Commercially, magnesium peroxide exists as a form of compound of magnesium peroxide and magnesium hydroxide.

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