Magnesium peroxide

Magnesium peroxide
Names
	IUPAC name Magnesium peroxide
	Other names Magnesium dioxide, magnesium bioxide, UN 1476
Identifiers
CAS Number	14452-57-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	55637 ;
ECHA InfoCard	100.034.928
EC Number	238-438-1;
PubChem CID	61745;
UNII	X8YVJ0TN96 ;
CompTox Dashboard (EPA)	DTXSID9049667 ;
	InChI InChI=1S/Mg.O2/c;1-2/q+2;-2 Key: SPAGIJMPHSUYSE-UHFFFAOYSA-N ; InChI=1/Mg.O2/c;1-2/q+2;-2 Key: SPAGIJMPHSUYSE-UHFFFAOYAN;
	SMILES [Mg+2].[O-][O-];
Properties
Chemical formula	MgO2
Molar mass	56.3038 g/mol
Appearance	White or off-white powder
Density	3 g/cm3
Melting point	223 °C (433 °F; 496 K)
Boiling point	350 °C (662 °F; 623 K) (decomposes)
Solubility in water	insoluble
Structure
Crystal structure	Cubic, cP12
Space group	Pa3, No. 205
Pharmacology
ATC code	A02AA03 (WHO) A06AD03 (WHO)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272
Precautionary statements	P210, P220, P221, P280, P370+P378, P501
NFPA 704 (fire diamond)	2 0 1 OX
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Magnesium peroxide (MgO₂) 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.