Re: Sodium chloropalladite and Ziatype, now on to making AFO

Darryl

I know this may sound pretty radical but you do need some iron to make
ferric ammonium oxalate!

What you have made by adding ammonium carbonate to oxalic acid is
ammonium oxalate and plenty of carbon dioxide (the fizz)

You may wish to re-visit the B&S site where you will find that you need
to combine ferric oxalate with ammonium oxalate in order to produce the
compound ferric ammonium oxalate. No need to form the crystalline
solid, just keep it as a liquid in a labeled (in case you mistake it
for the liquor, chartreuse) brown glass bottle.

My advice, just buy the stuff! It ain't that expensive!

Cheers ... Tony McLean

http://homepage.ntlworld.com/tony.mclean
On 18 Jan 2004, at 20:41, Baird, Darryl wrote:

> Has anyone made their own ammonium ferric oxalate (AFO) from ammonium
> carbonate and oxalic acid? What was your experience?
>
> The "formulary" at B&S states to make AFO, simply nuetralize oxalic
> acid with either ammonium or ammonium carbonate. I had the later and
> mixed equal parts (by weight) together into about 100ml of distilled
> water. After the fizzy stuff stopped, I vigorously stirred the
> concoction and then poured through a coffee filter, allowed to strain,
> and then spread the resulting white paste onto a glass sheet to dry.
> Is this an appropriate way to "nuetralize" or I'm likely to have
> missed a step or messed up the desired AFO?
>
> thanks
>
> Darryl
> <winmail.dat>
Received on Sun Jan 18 15:05:18 2004