Anthraquinone

<p>Anthraquinone, also called anthracenedione or dioxoanthracene, is an <a href="/facts/Aromatic_hydrocarbon/3EXq8Tgf">aromatic</a> <a href="/facts/Organic_compound/gqCNaN45">organic compound</a> with formula C14H8O2. Several <a href="/facts/Isomer/PXlvDVdg">isomers</a> exist but these terms usually refer to 9,10-anthraquinone (<a href="/facts/IUPAC/2AV6myCK">IUPAC</a>: 9,10-dioxoanthracene) wherein the <a href="/facts/Ketone/BqQXpLo4">keto</a> groups are located on the central ring. It is used as a digester additive to <a href="/facts/Pulp_(paper)/wIlq5nWm">wood pulp</a> for papermaking. Many <a href="/facts/Anthraquinones/qUH1BqVF">anthraquinone derivatives</a> are generated by organisms or synthesised industrially for use as <a href="/facts/Anthraquinone_dyes/H5TltC7C">dyes</a>, pharmaceuticals, and <a href="/facts/Catalysis/LPBS7TQC">catalysts</a>. Anthraquinone is a yellow, highly crystalline solid, poorly <a href="/facts/Solubility/kLE9h3Jb">soluble</a> in <a href="/facts/Water/0lkXnJPK">water</a> but soluble in hot organic solvents. It is almost completely insoluble in <a href="/facts/Ethanol/3lCLfBSP">ethanol</a> near room temperature but 2.25 g will dissolve in 100 g of boiling ethanol. It is found in nature as the rare mineral <a href="/facts/Hoelite/pClv7qaD">hoelite</a>.
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Anthraquinone open-in-new

Anthraquinone