April 2004 Alt-Photo-Process-L: Ferric citrate

From: guillermo mischkinis ^lt;clagui@infovia.com.ar>
Date: 04/08/04-05:15:08 PM Z
Message-id: <000201c41df4$47e17480$85b349c8@guillermo>

Green ferric ammonio-citrate: (C6H5O7)3 Fe2 (NH4)3

Brown ferric ammonio-citratre: (C6H5O7)2H2 Fe2 (OH)3 NH4, 3H2O

Both are ferric: iron with three positive charges. But they have different molecular weights, so in equal mass, have different sensibility simply because the iron +++ mass is different.

best regards,

guillermo
Received on Thu Apr 8 23:32:33 2004