Magnesium permanganate

Structural formula
General
Surname	Magnesium permanganate
Molecular formula	Mg (MnO 4 ) 2
External identifiers / databases
EC number	233-827-2
ECHA InfoCard	100.030.740
PubChem	11557984
Wikidata	Q18211722
properties
Molar mass	262.18 g mol −1
Physical state	firmly
density	2.18 g cm −3 (25 ° C)
Melting point	100-113 ° C
solubility	soluble in water
safety instructions
H and P phrases	H: 272-400
	P: 220-273
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Magnesium permanganate is an inorganic chemical compound of magnesium from the group of permanganates .

Extraction and presentation

Magnesium permanganate hexahydrate was produced by E. Mitserlich and H. Aschoff by reacting silver permanganate with magnesium chloride or barium permanganate with magnesium sulfate . Starting from silver permanganate and magnesium chloride, slow crystallization and drying leads to the tetrahydrate. The anhydrate can be obtained by thermal dehydration of the hexahydrate.

{\ displaystyle \ mathrm {MgCl_ {2} +2 \ AgMnO_ {4} \ longrightarrow \ Mg (MnO_ {4}) _ {2} +2 \ AgCl \ downarrow}}

{\ displaystyle \ mathrm {MgSO_ {4} + Ba (MnO_ {4}) _ {2} \ longrightarrow \ Mg (MnO_ {4}) _ {2} + BaSO_ {4} \ downarrow}}

properties

Magnesium permanganate hexahydrate is a blue black solid. It decomposes from 130 ° C with evolution of oxygen in an autocatalytic decomposition process. The tetrahydrate decomposes above 150 ° C. The crystals are practically insoluble in tri- and carbon tetrachloride , benzene , toluene , nitrobenzene ether , ligroin and carbon disulfide , but soluble in pyridine and glacial acetic acid. It dissolves in water and completely dissociates in dilute solutions. It oxidizes a number of organic compounds and reacts instantly (with fire in some cases) with common solvents such as THF, ethanol , methanol , t-butanol, acetone, and acetic acid.

use

Magnesium permanganate is used in various branches of industry and technology, e.g. B. as a wood impregnation agent, as an additive in tobacco filters, as a catalyst in the air oxidation of toluene to benzoic acid and in proteome research .

Individual evidence

↑ ^a ^b ^c ^d ^e data sheet Magnesium permanganate hydrate from Sigma-Aldrich , accessed on January 10, 2017 ( PDF ).
↑ ^a ^b ^c ^d Laszlo Kotai, Istvan Gacs, Istvan E. Sajo, Pradeep K. Sharma, Kalyan K. Banerji: ChemInform Abstract: Beliefs and Facts in Permanganate Chemistry - An Overview on the Synthesis and the Reactivity of Simple and Complex Permanganates. In: ChemInform. 42, 2011, S. no, doi : 10.1002 / chin.201113233 .
^ William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 72 ( limited preview in Google Book search).
^ Richard C. Ropp: Encyclopedia of the Alkaline Earth Compounds . Newnes, 2012, ISBN 0-444-59553-8 , pp. 875 ( limited preview in Google Book search).

[Sigma-1] ↑ ^a ^b ^c ^d ^e data sheet Magnesium permanganate hydrate from Sigma-Aldrich , accessed on January 10, 2017 ( PDF ).

[DOI10.1002/chin.201113233-2] Laszlo Kotai, Istvan Gacs, Istvan E. Sajo, Pradeep K. Sharma, Kalyan K. Banerji: ChemInform Abstract: Beliefs and Facts in Permanganate Chemistry - An Overview on the Synthesis and the Reactivity of Simple and Complex Permanganates. In: ChemInform. 42, 2011, S. no, doi : 10.1002 / chin.201113233 .

[William_M._Haynes-3] William M. Haynes: CRC Handbook of Chemistry and Physics, 97th Edition . CRC Press, 2016, ISBN 978-1-4987-5429-3 , pp. 72 ( limited preview in Google Book search).

[Richard_C._Ropp-4] Richard C. Ropp: Encyclopedia of the Alkaline Earth Compounds . Newnes, 2012, ISBN 0-444-59553-8 , pp. 875 ( limited preview in Google Book search).