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Reference.org
Magnesium hydroxide
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<p>Magnesium hydroxide is an <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the chemical formula Mg(OH)2. It occurs in nature as the mineral <a href="/facts/Brucite/g7PAmGnq">brucite</a>. It is a white solid with low solubility in water (<a href="/facts/Solubility_product/MNBoGyJb"><i>K</i>sp</a> = 5.61×10−12). Magnesium hydroxide is a common component of <a href="/facts/Antacid/CP9PeyQ8">antacids</a>, such as milk of magnesia. </p>