U of S | Mailing List Archive | alt-photo-process-l | RE: converting anhydrous to mono...?

RE: converting anhydrous to mono...?

Don, I haven't done it before but it seems like it's the only correct way
of doing it if you're using uncertain anhydrous potassium carbonate. OTOH,
I don't know if there's a stable crystallized version of potassium


20 Mayıs 2009, Çarşamba, 10:56 pm tarihinde, Don Bryant yazmış:
> Loris and all,
> I'd just add potassium carbonate to the oxalic acid solution (mixed at
> right concentration beforehand) until it doesn't fizz anymore, then add
> minuscule amounts of oxalic acid (patiently) checking the pH of the
> solution every time, until you reach the desired pH level. (pH 6?)
> That's more or less what I do. It works fine and is inexpensive.
> Don