From: Richard Knoppow (dickburk@ix.netcom.com)
Date: 05/30/00-09:19:48 PM Z
At 10:24 AM 05/31/2000 -0400, you wrote:
>Richard Knoppow wrote:
>
>>
Snipping here _ _ _ _ _
>No, Haist does not give any hint (at least so far as I have found)
>regarding possible incompatibilities of potassium carbonate with
>specific formulas. He does point out, as you allude to above, that
>potassium carbonate absorbs water from the air very readily, becoming
>moist and thus preventing carbonate dust from floating in the air. I
>have personally observed this quality in my use of potassium
>carbonate, and it presents a real problem in accurate weighing of the
>chemical. In certain circumstances I have noted that the actual
>weight of the chemical per volume has varied from 1-3X depending on
>water absorption.
>
>Sandy King
>
>
I've seen recomendations that Potassium Carbonate is best stored as a
strong solution because of its delequenscense. The solution is made up when
the carbonate is fresh, so is of predictable strength.
Since it will dissolve up to very high concentrations this is practical.
The solution is more likely to be of reliable strength than the powdered form.
Again, Monohydrated Sodium Carbonate is about the most stable form since it
neither give up or absorbes water.
---- Richard Knoppow Los Angeles,Ca. dickburk@ix.netcom.com
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