U of S | Mailing List Archive | alt-photo-process-l | RE: ferric oxalate

RE: ferric oxalate

Dan, Did you add anything other than water to get it to mix? If not, that
might have been your problem. The addition of oxalic acid may be required to
get it into solution. Dissolve the acid in to the water first and then add
the ground powder. Was there any customer service from the supplier? And did
it ever go into solution?  


Eric Neilsen Photo
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214 827-8301
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-----Original Message-----
From: Dan Burkholder [mailto:fdanb@aol.com] 
Sent: Tuesday, November 11, 2008 8:40 AM
To: alt-photo-process-l@usask.ca
Subject: Re: ferric oxalate

Hey Brian,

I had the same experience at a workshop this summer. I'd listed  
Bostick and Sullivan on my materials list but Anderson Ranch purchased  
the Ferric Oxalate from another source. When we tried to mix it with  
distilled H2O, the powder formed incredibly hard, granite-like clumps  
that were impossible to dissolve, even if you crushed the clumps via  
mortar and pestle. Fortunately FedEx (and Bostick and Sullivan) saved  
the day with a fresh batch of Ferric that arrived the next morning.

That's the first time in 24 years that I've run into that behavior but  
it sure shows that things can screw up in the Ferric formulation stage.



On Nov 10, 2008, at 5:02 PM, Brian Pawlowski wrote:

> Oh - I should mention - I got a bad bottle of Ferric Oxalate
> from someplace other than Bostick and Sullivan and I could
> NOT get the stuff to dissolve, and that which did had a
> funny solution color.