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Manganese heptoxide
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<p>Manganese(VII) oxide (manganese heptoxide) is an <a href="/facts/Inorganic_compound/TfFfzxSz">inorganic compound</a> with the <a href="/facts/Chemical_formula/hghUtthl">formula</a> <a href="/facts/Manganese/j9ELd1TL">Mn</a>2<a href="/facts/Oxygen/acyn6o8r">O</a>7. Manganese heptoxide is a volatile liquid with an oily consistency. It is a highly reactive and powerful <a href="/facts/Oxidizer/1FQzB8pQ">oxidizer</a> that reacts explosively with nearly any <a href="/facts/Organic_compound/gqCNaN45">organic compound</a>. It was first described in 1860. It is the <a href="/facts/Inorganic_acid_anhydride/2h1jor4I">acid anhydride</a> of <a href="/facts/Permanganic_acid/x8WPd8kw">permanganic acid</a>. </p>