Hello, Pierre and the list,
Oxalic acid is a simple member of the caboxylic acids -family, you can find it from the rhubarb. It�s strong enough to remove rust from porcelain etc. I have tried it in some Nantans and Campos with not so good results, it�s too weak to remove any deeper rust from FeNi.
Some mineral-collectors boil their rusty specimens in the liquid Oxalic acid, haven�t tried that. If you want to try, you should take care of the ventilation good enough. Even if the acid is weak, the vapours are dangerques to breath.
Also, if the acid is used as a liquid including water / powder-acid has been washed with water, the specimens must be dryed after the bath. Anyway, Oxalic acid is a good remover of rust for household items, bath-rooms and so on, so if you�ll find it to work with irons, I suppose, there is no harm for them to use it, it�s a very week acid, and can be washed out with water, so you don�t have to neutralize it. Think the main thing is to get the specimens dried good enough after the bath, or the result may be worse than the original...;-
Don�t know the product Dithonite.
take care,
pekka
Pierre-Marie PELE wrote:
>Hello to the List,
>
>I'm searching for rust removers. Here in France are sold two products called Oxalic Acid and Dithonite. Did you ever used these
>products on iron meteorites ?
>
>Thanks in advance.
>
>Check out soon my book "Les Meteorites francaises". You can get information on my website www.meteor-center.com
>
>Best regards,
>
>Pierre
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