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Reference.org
Decamethylcyclopentasiloxane
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<p>Decamethylcyclopentasiloxane, also known as D5 and D5, is an <a href="/facts/Organosilicon_compound/JvUwzDQ4">organosilicon compound</a> with the formula [(CH3)2SiO]5. It is a colorless and odorless liquid that is slightly <a href="/facts/Volatility_(chemistry)/90r3ep6w">volatile</a>. </p>