[Diplomania]

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

[Arkcon]

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?