Re: how long will premixed sensitizer last?
Beakman (beakman@netcom.com)
Tue, 1 Oct 1996 15:28:46 -0700 (PDT)
>
> The reason the EDTA helps the FeOx dissolve is that the EDTA is chelating
> some of the Fe out of solution, driving the dissolution forward. This sounds
> like a case of where it *looks* like the "right thing" is happening, but it's
> not.
>
> I'd show the equations, but I'm poor at ASCII art.
>
> In this case, a good portion of the EDTA (which is a pain to dissolve and
> somewhat expensive) is simply allowing you to substitute FeOx for Oxalic
> Acid.
So, are you saying that the addition of EDTA is a bad thing?
David (curious because he adds EDTA to his FeOx solution)