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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: vysoky on June 03, 2010, 02:50:24 PM

Title: how to induce precipitation in DMF
Post by: vysoky on June 03, 2010, 02:50:24 PM
Dear all,
I have reacted vanadium triisopropoxide with 9-Antracenecarboxylic acid in DMF. After the solvothermal reaction has been completed, the obtained liquid product consists is rather black. However, even after centrifugation at 10000 I can not separate precipitated product but still have very stable solution. My question is how to induce precipitation and how to remove residual reaction solution?
Title: Re: how to induce precipitation in DMF
Post by: nj_bartel on June 03, 2010, 07:04:32 PM
Filtration through celite in a fritted filter?
Title: Re: how to induce precipitation in DMF
Post by: AC Prabakar on June 04, 2010, 09:11:54 AM
Dear all,
I have reacted vanadium triisopropoxide with 9-Antracenecarboxylic acid in DMF. After the solvothermal reaction has been completed, the obtained liquid product consists is rather black. However, even after centrifugation at 10000 I can not separate precipitated product but still have very stable solution. My question is how to induce precipitation and how to remove residual reaction solution?

If you have pure form of your product,you can seed the solution.But you need to ensure the followings:-
1.Condition favorable for isolation of the desired compound.
2.Concentration of the solution and temperature.