Re: ferric oxalate

[Alberto Novo <alt.list@albertonovo.it>]

> I had the same experience at a workshop this summer. I'd listed  Bostick 
> and Sullivan on my materials list but Anderson Ranch purchased  the Ferric 
> Oxalate from another source. When we tried to mix it with  distilled H2O, 
> the 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. 
Alberto