- Magnesium peroxide
Magnesium peroxide Identifiers CAS number PubChem ChemSpider EC number Jmol-3D images Image 1 Properties Molecular formula MgO2 Molar mass 56.3038 g/mol Appearance White or off-white powder Density 3 g/cm3 Melting point
350 °C (decomp)
Solubility in water insoluble Structure Crystal structure Cubic, cP12 Space group Pa-3, No. 205 Hazards R-phrases S-phrases , Main hazards Oxidizing (O) NFPA 704 (what is: /?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Magnesium peroxide is a 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 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
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.
One medical use is as a lower bowel stool hydrator, which has a similar softening effect on the stool as a laxative, but with a reduced purgative response. The slow release of oxygen in the lower bowel allows beneficial aerobic pro-biotic bacteria and yeasts to proliferate, whilst at the same time providing a poor environment for anaerobic pathogens. The subsequent increase in the probiotic activity increases the volume of bacteria, and the resultant bowel distension triggers a bowel evacuation response. Magnesium Peroxide has been found to effectively re-hydrate stool and improve motility in constipation.
Magnesium compounds Drugs for acid related disorders: Antacids (A02A) → Magnesium
Calcium Sodium Combinations and complexes
of aluminium, calcium and magnesium
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