Dan Nave wrote:
This article shows the theoretical soluability of silver hydroxide at
a pH of 9 as 100mg/l which would be 100ppm. See page 8:
http://www.mtes.org/documents/pmg_metal_precip_man1.pdf
That is why he calls it "theoretical". His theory is incomplete. He
ignores the fact that silver hydroxide continually converts to silver
oxide, and silver oxide converts back to silver hydroxide, so there are
approximately equal parts of each. Silver oxide has a solubility of 13
ppm in cold water "CRC Handbook of chemistry and physics 52nd edition".
Thus if you have more than 13 ppm of silver hydroxide, it will attempt
to produce over 13 ppm of silver oxide, the excess of which precipittes
out. The result is that long term solubility is a practical 13 ppm of
both silver hydroxide and silver oxide.
Marshall
Dan
On Fri, Jul 3, 2009 at 9:27 AM, Marshall Dudley<mdud...@king-cart.com> wrote:
Silver hydroxide has a solubility of approximately 13 ppm. It converts back
and forth with silver oxide, which also has a 13 ppm solubility. Thus a
silver hydroxide/oxide solution of silver has a maximum concentration of
approximately 26 ppm. It is, BTW, the ionic portion of EIS.
Marshall
Rachel Smithies wrote:
Hello All,
I am curently looking at "ionic silver products" for medicinal purposes. I
have found a brand which is 100ppm Ionic Silver by Metabolics. Their website
says that:
10 drops contain:
Silver
(as Silver Hydroxide).............;9mcg;+;+
http://www.metabolics.com/store/natural+healthcare/product/ionsi0100t/
I have never seen ionic silver described as silver hydroxide before; is
this true soluble ionic silver or actually a silver particle colloid ?
I have looked up silver hydroxide on the net but I'm not a chemist and I
can't figure out what exactly silver hydroxide is. Can anyone shed sny light
on this? Many thanks.
Kind Regards
Rachel
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