Magnesium peroxide

Crystal structure
	__ Mg 2+ __ O 2 2−
General
Surname	Magnesium peroxide
Ratio formula	MgO 2
Brief description	colorless and tasteless powder
External identifiers / databases
EC number	238-438-1
ECHA InfoCard	100,034,928
PubChem	61745
ChemSpider	55637
Wikidata	Q419379
Drug information
ATC code	A02 AA03 ; A06 AD03 ;
properties
Molar mass	56.30 g mol −1
Physical state	firmly
solubility	almost insoluble in water
safety instructions
	Please note the exemption from the labeling requirement for drugs, medical devices, cosmetics, food and animal feed
H and P phrases	H: 272-314
	P: 220-280-305 + 351 + 338
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Magnesium peroxide is a chemical compound made up of the elements magnesium and oxygen . It has the formula MgO ₂ and belongs to the group of peroxides .

Extraction and presentation

The hemihydrate of magnesium peroxide can be precipitated with hydrogen peroxide from a saturated solution of magnesium nitrate . The anhydrate can be obtained from this by heating it in nitrogen .

{\ displaystyle \ mathrm {Mg (NO_ {3}) _ {2} + H_ {2} O_ {2} \ longrightarrow MgO_ {2} +2 \ HNO_ {3}}}

It is also possible to obtain it by reacting hydrogen peroxide with magnesium oxide . The resulting crystalline substance has the composition MgO ₂ · 0.12 H ₂ O ₂ · 0.61 H ₂ O.

{\ displaystyle \ mathrm {MgO + H_ {2} O_ {2} \ longrightarrow MgO_ {2} + H_ {2} O}}

properties

Magnesium peroxide is a finely powdered, colorless compound. It is similar to calcium peroxide and releases oxygen through a controlled reaction with aqueous solutions. It has a crystal structure of the pyrite type and decomposes above 300 ° C to form magnesium oxide MgO and oxygen.

use

Magnesium peroxide is used to release oxygen in the cosmetic, agricultural and pharmaceutical industries. It is also used to reduce contamination of the groundwater and to wash it free. Magnesium peroxide is also used for the natural decontamination and quality improvement of agricultural land. It can therefore also be used as a bleach or disinfectant . It is also used in deodorants and shower gels .

Under the name Ozovit MP it is on the market as a medical product for the treatment of digestive disorders.

The first machine- propelled submarine, the Ictíneo II , used magnesium peroxide to generate both heat and breathing oxygen.

Individual evidence

↑ ^a ^b Entry on magnesium peroxide. In: Römpp Online . Georg Thieme Verlag, accessed on July 15, 2014.
↑ ^a ^b Entry on magnesium peroxide in the GESTIS substance database of the IFA , accessed on July 23, 2016(JavaScript required) .
↑ ^a ^b ^c Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 907.

[roempp-1] Entry on magnesium peroxide. In: Römpp Online . Georg Thieme Verlag, accessed on July 15, 2014.

[GESTIS-2] Entry on magnesium peroxide in the GESTIS substance database of the IFA , accessed on July 23, 2016(JavaScript required) .

[brauer-3] Georg Brauer (ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 907.