RE: Ferric Oxalate or Ferric Ammonium Oxalate

[Loris Medici <mail@loris.medici.name>]

Oops! Potassium Oxalate is soluble!!!

 I don't remember exactly but Mike told me that K metal salts and AFO will
cause formation of an insoluble salt which incorporates K and Oxalate (and
possibly something else)... In this correspondence, the context was
Chrysotype but I think this is applicable to Pt/Pd printing also; since he
doesn't use the ordinary K salts, he uses the NH4 salts instead (this should
hint some problems related with K salts).

Regards,
Loris.

-----Original Message-----
From: Loris Medici [mailto:mail@loris.medici.name] 
Sent: 04 Kasım 2006 Cumartesi 00:08
To: 'alt-photo-process-l@usask.ca'
Subject: RE: Ferric Oxalate or Ferric Ammonium Oxalate

...My understanding is that Mike doesn't like K salts because it may cause
forming of Potassium Oxalate which is insoluble, therefore will cause a
gritty sensitizer...