May 20, 2019, 05:24:48 PM
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Topic: Removing oxalic acid residue from crystals  (Read 148 times)

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Offline rgeagr4ea

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Removing oxalic acid residue from crystals
« on: May 11, 2019, 12:47:32 AM »
Hello I'm not sure where to post this sorry if this is in the wrong section. I have quartz crystals that I use oxalic acid to clean; I got impatient and used too much oxalic acid powder in solution and it has left a hard white chalky residue on my crystals that I can not get out. I think it's calcium carbonate residue. I hope my crystals are not ruined.

I need the help of chemists; what can I do to remove this residue? It doesn't come off in water or with scrubbing. I also tried using concentrated acetic acid but that doesn't help either. Thanks for your help.

Offline jeffmoonchop

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Re: Removing oxalic acid residue from crystals
« Reply #1 on: May 11, 2019, 02:44:49 PM »
you have probably left oxalic acid on it. It should dissolve in alcohol try wiping with that.

Offline rgeagr4ea

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Re: Removing oxalic acid residue from crystals
« Reply #2 on: May 11, 2019, 10:57:48 PM »
I just tried, still didn't dissolve any :/

Offline jeffmoonchop

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Re: Removing oxalic acid residue from crystals
« Reply #3 on: May 13, 2019, 01:40:23 PM »
pics?

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