[Alt-photo] mixing solution

Serdar Bilici sbilici at gmail.com
Wed May 10 17:42:08 UTC 2017

I prepare and use %50 citric acid stock solution, for various processes. It
is very soluble but takes a bit of time even with a magnetic stirrer.
If magnetic stirrer is not used, warmer or hot water will make it
effortless to mix.


On Wed, May 10, 2017 at 8:34 PM, Keith Schreiber via Alt-photo-process-list
<alt-photo-process-list at lists.altphotolist.org> wrote:

> The solubility of citric acid in water is 147.76g in 100ml at 20°C (68°F),
> so It's probably not necessary to warm the water much to dissolve 400g in
> 1000ml, though it would dissolve faster in warmer water. I use citric acid
> every day and always dissolve it at room temp, though I'm not using at that
> high of a concentration.
> Cheers,
> Keith
> Keith Schreiber
> jkschreiber.com
> > On May 10, 2017, at 9:56 AM, Loris Medici via Alt-photo-process-list <
> alt-photo-process-list at lists.altphotolist.org> wrote:
> >
> > If I remember correctly, mixing citric acid into water is endothermic
> (the
> > solution temperature goes down...), therefore you may opt to warm the
> water
> > beforehand; (to 40-50C in the microwave owen) the acid will go into
> > solution faster...
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