On Sep 7, 2006, at 6:48 AM, PicDude wrote:

> Google found me some chemicals which are specifically ferric
> chloride stain remivers, but from suppliers in the UK.  The
> MSDS says that it's 100% oxalic acid, which I can get from
> other sources, such as www.chemistrystore.com .
>
> Anyone here know if it really works?  Can I just get oxalic acid
> from another source and expect it to magically remove the ferric
> chloride stains?

Well, my bottle of ferric chloride and oxalic acid happened to be
right next to each other, so I tried mixing them.  The mix stayed
an ugly ferric chloride brown, so you're not going to get "magic."
Whether it would remove "stains" from (ie) clothing, that are
presumably some non-soluble byproduct (iron oxide?) is a separate
question (I think I've seen oxalic acid in hardware stores as a
rust stain remover, and/or as a component of wood bleach.)  But
I think it's not going to help much in your application...

BillW
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