[meteorite-list] The Dreaded Rust!
From: meteorites_at_space.com <meteorites_at_meteoritecentral.com>
Date: Thu Apr 22 09:46:22 2004
On Sun, 06 May 2001, "kentnorwood" wrote:
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> <DIV><FONT face=Arial size=2>Hi List,</FONT></DIV>
> <DIV> </DIV>
> <DIV><FONT face=Arial size=2> I have a Campo and a Canyon
> Diablo that are beginning to show rust. From "The Meteorite & Tektite
> Collector's Handbook", I have a choice of using sodium citrate, sodium
> hydrosulfate, oxalic acid, or tartaric acid to remove the rust. I have
> never bought or used any of these and would like to ask the list which I should
> choose. Are they available at a hardware store or ?</FONT></DIV>
> <DIV><FONT face=Arial size=2> The book also tells me
> to seal the specimens using lacquer; Which brand or type
> should I use?</FONT></DIV>
> <DIV> </DIV>
> <DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
> <DIV><FONT face=Arial size=2> Kent
> Smith</FONT> </DIV></BODY></HTML>
oxalic acid can be obtained at any automotive store. Its the tank dip, dark brown stuff used to clean carbs and auto parts.
I have never tried it on meteorite rusting, and I am not sure if it will work as effectively as using 70% isoproypl with a teaspoon of Red Devil lye (NaOH) per cup.
I think that FeCl3 is acidic, so a strong base such as NaOh should take care of that better than any acid.
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Received on Sun 06 May 2001 03:10:41 PM PDT