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VIw I a_vI IIYIv/yL. L)ULL.0 1 IIV Ir 111.L. <br /> Oxygen Release Compound,ORC® <br /> Basic Theory on the Disposition <br /> of Compounds <br /> Basic Chemistry <br /> Oxygen Release Compound (ORC ID), is a proprietary formulation of magnesium <br /> peroxide. ORC is "oxygenated magnesia" which gives up the oxygen upon <br /> contact with water. Magnesium peroxide is converted to magnesium hydroxide <br /> (Mg(OH)2) as oxygen is released. This also is the fate of the magnesium oxide <br /> which simply hydrates to form the hydroxide. The reactions are: <br /> M902 + H2O --)_ 1/2 OZ+ Mg(OH)2 ; and <br /> MgO + H2O -* Mg(OH)2 <br /> Therefore, the uniform endpoint of ORC, from both compounds, is magnesium <br /> hydroxide. The safety of this material is easily conveyed by the fact that a <br /> suspension of magnesium hydroxide in water is ordinary Milk of Magnesia. <br /> Eree Magnesium <br /> Levels of free magnesium coming from ORC or magnesium hydroxide are not a, <br /> problem. Both magnesium peroxide and magnesium hydroxide are virtually <br /> insoluble (ISP = 1.8 X 1011). Additionally, because ORC is contained in a filter <br /> sock, the magnesium is contained and removable. Small 'particles of a few <br /> microns in diameter could leave the sock and be carried a limited distance in the <br /> sub-surface, before becoming part of the soil matrix. The compounds are simple <br /> minerals. Microorganisms can metabolize these compounds using their internal <br /> organic acids to solubilize them. <br />