Magnesium peroxide

Magnesium peroxide
IUPAC name Magnesium peroxide
Other names Magnesium dioxide, Magnesium bioxide, UN 1476
Identifiers
CAS number	1335-26-8
PubChem	159386
ChemSpider	55637 Y
EC number	238-438-1
Jmol-3D images	Image 1
SMILES [Mg+2].[O-][O-]
InChI InChI=1S/Mg.O2/c;1-2/q+2;-2 Y Key: SPAGIJMPHSUYSE-UHFFFAOYSA-N Y InChI=1/Mg.O2/c;1-2/q+2;-2 Key: SPAGIJMPHSUYSE-UHFFFAOYAN
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
Main hazards	Oxidizing (O)
NFPA 704	0 2 1 OX
Y peroxide (verify) (what is: Y/N?) 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 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

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.

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.

External links

• Shangyu Jiehua Chemical