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Subject: Re: Removing ferric chloride stains

From: "adriano-sar" <adriano.venturini@...>
Date: 2006-10-08

> I was curious about the stuff sold for removing ferric chloride
> 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.

use the muriatic acid with hydrogen peroxide and does not remain
residual, once used it is neutralized with of common bicarbonate