RE: Ferric Oxalate

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From: Don Bryant (dsbryant@telocity.com)
Date: 02/05/02-06:19:48 AM Z


Eric,

> There was much discussion at the time about this finding.

I'll look that up in the archive.

> From my recollection, it was derived based on B&S ferric oxalate
powder that had been prepared to the liquid state and then altered
additionally with "extra" ingredients.

Is there a difference in the B&S F.O. powder and that which is obtained
elsewhere? I vaguely recall a message by Jeffery Mathias that compared
different F.O. concentrations.

> Some of the discussion was based on the Sp Gr of ferric oxalate. I
can not reflect on that attempt as I have been making my own since 1993.

Is manufacturing F.O. difficult?

> There should be no down side that I recall from adding either of the
two components mentioned. The >oxalic acid is one of the components
that I use to make it and has been written up early text as a offering
preservative properties.

So do you use these additives?

>Some time back I did find that an early batch of ferric oxalate did
precipitate a hard white substance after an addition of EDTA tetra
sodium for which Richard had no insight. I removed it and continued to
use it with no problem.

I assume you mean you removed the percipitate.

Don Bryant


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