Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: alizarine synthesis
ItalianChemist
Hazard to Others
***




Posts: 172
Registered: 26-1-2011
Location: Italy
Member Is Offline

Mood: No Mood

[*] posted on 13-4-2011 at 05:26
alizarine synthesis


Does anyone have a synthesis of alizarine from anthraquinone?
In my book is reported that alizarin can be produced oxidising anthraquinone with sodium chlorate and sodium hydroxide, with some water, at 200°C.
Is it possible, and how much time does this reaction require?
Thanks
View user's profile View All Posts By User
Bot0nist
International Hazard
*****




Posts: 1559
Registered: 15-2-2011
Location: Right behind you.
Member Is Offline

Mood: Streching my cotyledons.

[*] posted on 13-4-2011 at 05:56


Sorry, I'm not sure about the actual procedure, but I did find some historical links related to it.

"Carl Theodore Liebermann (1842 -1914) distilled alizarin with zinc dust to give anthracene in 1868, subsequently synthesizing alizarin from anthraquinone in 1869.

The principal synthesis entailed oxidation of anthraquinone-2-sulfonic acid with sodium nitrate in concentrated sodium hydroxide."

http://www.winsornewton.com/resource-centre/product-articles...

[Edited on 13-4-2011 by Bot0nist]




U.T.F.S.E. and learn the joys of autodidacticism!


Don't judge each day only by the harvest you reap, but also by the seeds you sow.
View user's profile View All Posts By User

  Go To Top