Chemical Forums

General Forums => Generic Discussion => Topic started by: rgeagr4ea on May 11, 2019, 12:47:32 AM

Title: Removing oxalic acid residue from crystals
Post by: rgeagr4ea 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.

Title: Re: Removing oxalic acid residue from crystals
Post by: jeffmoonchop 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.

Title: Re: Removing oxalic acid residue from crystals
Post by: rgeagr4ea on May 11, 2019, 10:57:48 PM

I just tried, still didn't dissolve any :/

Title: Re: Removing oxalic acid residue from crystals
Post by: jeffmoonchop on May 13, 2019, 01:40:23 PM

pics?