[alt-photo] Clerc and am fe citrate

Alberto Novo alt.list at albertonovo.it
Sun Mar 4 08:03:40 GMT 2012

I am looking for the chemical definition brown ammonium ferric citrate given 
by Clerc. I remember a footnote in:
Clerc, L.P. (1950) "La Technique Photographique"
5th Ed, tome II, Publications photographiques et cinematographiques Paul 
Montel, Paris V, 1950, pp.816-817
I have had the oppportunity of taking some notes about the empirical formula 
of the green form, but unfortunately I did not save the information about 
the brown one.
Now I nave not the opportunity to look at Clerc anymore. May you help me? 


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