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<p>gas, hydrogen gas, sulfuric acid (if  is used;  can alternatively be used to yield ), and  of 98% or higher purity. It is crucial to <a href="page.php?w=Degasification">deaerate</a> the seawater to mitigate co-precipitation of calcium precipitates.</p>

<p><big>Uses</big></p>
<p><big>Precursor to MgO</big></p>
<p>Most Mg(OH)<sub>2</sub> that is produced industrially, as well as the small amount that is mined, is converted to fused <a href="page.php?w=Magnesium_oxide">magnesia</a> (MgO). Magnesia is valuable because it is both a poor electrical conductor and an</p><p>
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