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

Tony,

Ha, that's pretty funny, of course my final product is afo, but I
needed the ammonium oxalate first. I already have the FO, but as today
is Sunday and I have rare free time, I thought I'd just do it... (plus
I'm half Scotch)

thanks for pointing out the obvious error in my post

now I'll wait till the stuff dries for an accurate weight measure and
continue the madness (it also keeps me out of the wife's hair)

-Darryl

-----Original Message-----
From: Tony McLean [mailto:tony.mclean@spamcop.net]
Sent: Sun 1/18/2004 4:04 PM
To: alt-photo-process-l@sask.usask.ca
Subject: 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>