[Alt-photo] Re: ferric oxalate properties-looking for information

[Peter Friedrichsen]

Thanks Loris. Sounds like a good starting point.

Peter Friedrichsen

At 08:56 AM 18/01/2014, you wrote:
>Hi Peter,
>
>See this article below:
>http://www.alternativephotography.com/wp/alt-proc/a-short-treatise-on-iron-salts
>
>There's a s.g. towards the end of the article. Nothing about pH though...
>
>Hope this helps.
>
>Regards,
>Loris.
>
>
>
>2014/1/18 Peter Friedrichsen <pfriedrichsen at sympatico.ca>
>
> > Having a hard time finding specific gravity and pH values for ferric
> > oxalate that I made from ferric hydrate "mud" It is an olive green but more
> > yellow when seen through an eye dropper and a 5% solution has a pH of 2.3.
> > Anyone know of charts of S.G. vs concentration and expected pH values? Any
> > way to determine if free oxalic acid is present?
> >
> > Thanks,
> >
> > Peter Friedrichsen
> >
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