Dissolving ferric oxalate

Looks more like iron oxide.

If it was ferrous oxalate instead, you can do a potassium ferricyanide (part B of a cyanotype kit) test - add a drop of an acidified (may not be required since you are already adding oxalic acid) solution of it to a bit of this slurry, if it results in a blue color (that of Prussian blue) then either you have ferrous oxalate by mistake from the supplier or you have ferric oxalate that is partly converted to ferrous.

:Niranjan.

Rvhj said:

This is what I have

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I recently ordered Ferric Oxalate from a supplier in Mumbai and it looks similar and behaves very much the same like yours. Just want to check if you found any solution for dissolving the stuff and make it work for your purposes?





It's a pity that my naive DIY Ferric Oxalate worked well for Kallitype and the lab synthesised one is a dud.

Raghu Kuvempunagar said:

It's a pity that my naive DIY Ferric Oxalate

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Did you mean "native"?

Hi I'got the Ferric Oxalate from Laboldtech, to make 100 ml I'disolved it as they instruct 27g Ferric Oxalate 120ml of water at 48 celsius, it dissolved in 20 min... But now I have almost 150 ml of solution. the question is, should I'leave it at room temperature to evaporate or at 48 celsius?