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Topic: recrystallization of complex Fe  (Read 3032 times)

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Offline Diplomania

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recrystallization of complex Fe
« on: February 22, 2016, 06:37:45 AM »
I need a solvent for recrystallization for 1)potassium ferric oxalate trihydrate and for 2) Sodium iron EDTA.
I was thinking of using water for potassium ferric oxalate trihydrate, but I have trouble figuring out what to use for the iron EDTA since it is soluble in water at room temp. I cant. use water. Are there a method to use for choocing the right solvent ?

thankyou

Offline Arkcon

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Re: recrystallization of complex Fe
« Reply #1 on: February 23, 2016, 08:48:40 AM »
The crystallization process for KFe-oxalate is given here: https://en.wikipedia.org/wiki/Potassium_ferrioxalate#Preparation

It seems it is crystallized simply by evaporation of the water.  Since Na-Fe-EDTA is likewise sold as a powder, by Sigma-Aldrich, it may very well be made the same way.  I wasn't sure to begin with that it was possible, some complexes may only exist in water solution.  Why do you feel the need to recrystalize?
Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

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