<var id="79jxb"><video id="79jxb"></video></var>
<var id="79jxb"><strike id="79jxb"></strike></var>
<cite id="79jxb"><span id="79jxb"></span></cite>
<cite id="79jxb"><video id="79jxb"><listing id="79jxb"></listing></video></cite><cite id="79jxb"><span id="79jxb"><menuitem id="79jxb"></menuitem></span></cite><cite id="79jxb"><noframes id="79jxb"><menuitem id="79jxb"></menuitem><cite id="79jxb"><span id="79jxb"><cite id="79jxb"></cite></span></cite><var id="79jxb"><video id="79jxb"></video></var>
<var id="79jxb"><strike id="79jxb"><thead id="79jxb"></thead></strike></var>
<menuitem id="79jxb"><strike id="79jxb"></strike></menuitem><menuitem id="79jxb"></menuitem>
<var id="79jxb"><strike id="79jxb"><thead id="79jxb"></thead></strike></var>
<cite id="79jxb"><span id="79jxb"></span></cite>
<cite id="79jxb"></cite>
<cite id="79jxb"></cite>
<var id="79jxb"></var>
<var id="79jxb"></var>
You are using an outdated browser. Please upgrade your browser to improve your experience and security.
Anthraquinone
chemical compound
Print

Anthraquinone

chemical compound
Alternative Titles: 9,10-anthraquinone

Anthraquinone, also called 9,10-anthraquinone, the most important quinone derivative of anthracene and the parent substance of a large class of dyes and pigments. It is prepared commercially by oxidation of anthracene or condensation of benzene and phthalic anhydride, followed by dehydration of the condensation product.

Rivoli's hummingbird (Eugenes fulgens) has iridescent structural colour.
Read More on This Topic
coloration: Anthraquinones
The anthraquinones occur widely in plants but in only a few animals. These brilliantly coloured compounds have found wide application as...

Structural formula.

Alizarin and many other vegetable pigments have chemical structures similar to anthraquinone. Anthraquinone can be converted to alizarin and to a number of synthetic dyestuffs, including a large family of vat dyes.

Although extremely stable toward oxidation, anthraquinone can be easily reduced to a variety of products. In alkaline solution, sodium dithionite reduces it to anthrahydroquinone, the alkali metal salts of which are water-soluble. The use of anthraquinones as vat dyes depends on this chemical reaction.

Get exclusive access to content from our 1768 First Edition with your subscription. Subscribe today
Check out Britannica's new site for parents!
Subscribe Today!
91国产福利在线观看