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 Eric Neilsen Photo 4101 Commerce Street, Suite 9 Dallas, TX 75226 214 827-8301 http://ericneilsenphotography.com SKype ejprinter -----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. Dan info@DanBurkholder.com www.DanBurkholder.com 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.
|