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> I was curious about the stuff sold for removing ferric chlorideuse the muriatic acid with hydrogen peroxide and does not remain
> stains, so I looked up the Mega Electronics data sheet on the stuff
> they sell (its made by Bungard). Its simply oxalic acid crystals and
> rubbing with rhubarb leaves should work just as well, they contain
> oxalic acid. Its quite poisonous, BTW.