Peroxides magnesium

Overbase magnesium sulfonates are a transparent colloidal dispersion (0.1 xm or smaller) of magnesium carbonate in oil containing protective colloids, which are usually magnesium derivatives of petroleum sulfonic acids or alkyl benzene sulfonic acids. 

Magnesium peroxide is easily prepared by the reaction of a low-iron magnesium oxide or magnesium hydroxide with concentrated solutions of hydrogen peroxide (30-70%) and can be represented by reaction (14.2) (Vannerberg, 1959 Pierron, 1950)  

The necessity for a low-iron magnesium oxide stems from the fact that iron compounds present in the MgO have a tendency to catalyze premature decomposition of the peroxide. The reaction is fast and very exothermic and is carried out by rapidly mixing the reactants in a cooled vessel, the optimal processing temperature being around 30-40°C. Mixing time is kept to a minimum since the longer it is carried out the hotter the reaction mixture 

Magnesium peroxide is widely used as a source of oxygen for aerobic microorganisms during the treatment and disposal of biological waste see reaction (14.3)  

Odors that form in composting bins can be controlled using magnesium peroxide, as well as supplying oxygen to the aerobic bacteria, which can speed up the composting process. 

---

Zinc, calcium, and magnesium peroxides prepared from hydrogen peroxide are used as specialized oxidants where a slow release of hydrogen peroxide is desired. These find use in various medicinal treatments. 

U.S. imports and exports of Mg(OH)2 in 1989 and 1990, combined with those for magnesium peroxide, are Hsted in Table 15 (52). Individual import/export figures for Mg(OH)2 are not reported. 

Zinc Peroxide. Zinc peroxide [1314-22-3] is a yellow soHd, generally similar to magnesium peroxide. The commercial product is a pale... 

Hydrazoic acid Hydrides, volatile Hydrogen cyanide (unstabilized) Hydrogen (low pressure) Hydrogen peroxide (> 35% water) Magnesium peroxide Mercurous azide Methyl acetylene Methyl lactate Nickel hypophosphite Nitriles > ethyl Nitrogen bromide... 

J. W. Dobson, Jr. and P. D. Kayga. Magnesium peroxide breaker system improves filter cake removal. Petrol Eng Int, 68(10) 49-50, October 1995. 

Magnesium oxysulfate cements, 75 417 Magnesium perchlorate, dessicant, 8 360 Magnesium peroxide, 75 415 78 395 Magnesium phosphate, 75 415 416 Magnesium phosphate cements, 5 500t 75 416... 

Lead dioxide Lead perchlorate Lithium chlorate Lithium hypochlorite Lithium perchlorate Lithium peroxide Magnesium bromate Magnesium chlorate Magnesium perchlorate Magnesium peroxide Manganese dioxide Mercurous chlorate Mono-(trichloro)-tetra-(mono-potassium dichloro)-penta-s-triazinetrione... 

Treatment of barium peroxide, Ba02 with a concentrated solution of magnesium sulfate yields magnesium peroxide Mg02, a white powdery material used as a bleaching and oxidizing agent, and as an antacid in medicine. 

One approach is to optimize the levels of electron acceptors. Slow release formulations of inorganic peroxides, such as magnesium peroxide, have recently been used with success. Nitrate may be added, although there are sometimes regulatory limitations on the amount of this material that may be added to groundwater. Ferric iron availability may be manipulated by adding ligands. 

There are minor uses for magnesium peroxide in household products, veterinary medicine, and metallurgy. Magnesium peroxide is a strong oxidizer and can cause fire when in contact with combustible materials. It is a powerful irritant to skin, eyes, and mucous membranes. 

---