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Orthosilicic acid
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<p>Orthosilicic acid is an <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the formula <a href="/facts/Silicon/cgWx0hdr">Si</a>(<a href="/facts/Oxygen/acyn6o8r">O</a><a href="/facts/Hydrogen/BoYHjl0J">H</a>)4. Although rarely observed, it is the key compound of <a href="/facts/Silica/A3WILp6J">silica</a> and <a href="/facts/Silicate/7NdthSRM">silicates</a> and the <a href="/facts/Precursor_(chemistry)/dUw8Mx2Y">precursor</a> to other <a href="/facts/Silicic_acids/vrXPqNhF">silicic acids</a> [H2<i>x</i>SiO<i>x</i>+2]<i>n</i>. Silicic acids play important roles in <a href="/facts/Biomineralization/m5mGPaTM">biomineralization</a> and technology. It is the parent acid of the <a href="/facts/Orthosilicate/CKXheWm5">orthosilicate</a> anion SiO4−4. </p>