U of S | Mailing List Archive | alt-photo-process-l | Re: ferric oxalate

Re: ferric oxalate

12 Kasım 2008, Çarşamba, 10:15 am tarihinde, Alberto Novo yazmış:
>> I had the same experience at a workshop this summer...
>> powder formed incredibly hard, granite-like clumps  that were
>> impossible to dissolve, even if you crushed the clumps via  mortar and
>> pestle.
> Are you sure it were not ferrOUS oxalate, a yellowish powder instead of
> green crystals? I have never found ferric oxalate sold by the main
> chemistry
> suppliers.

Is ferrous oxalate a defined compound? Can one oxidise it (w/ hyrdogen
peroxide) to get ferric oxalate?