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Re: [APD] Drying sodium bicarbonate
Here is a link which you might find helpful:
Generally, you shouldn't have to dry sodium bicarbonate if you've been
storing it properly (i.e. closed). One thing you can do is store the closed
container in a dessicator, which will prevent new moisture from entering the
package. You can also put a small amount of the chemical in the dessicator
in a pan or on paper overnight to help it dry. Also, if you do choose to
oven dry, allow the sodium bicarbonate to cool in a dessiccator before using
it, since hot solids tend to attract water faster than cool ones. I guess
the moral is: use a dessicator!
Note that if you do choose to oven dry your sodium bicarbonate, keep the
temperature safely away from boiling (under 90 deg C or 190 deg F), since
ovens tend to have hot-cold (relative) cycles. Sodium bicarbonate gives off
CO2 as is decomposes, so don't dry too much at once! Sodium bicarbonate
decomposes around 100 degrees C.
Date: Wed, 20 Dec 2006 04:11:51 EST
From: Billionzz at aol_com
Subject: [APD] Drying sodium bicarbonate
To: aquatic-plants at actwin_com
I read that sodium bicarbonate should be dry'ed in an oven to get rid of
moisture before making a KH reference solution.
Does anyone know for how long and at what temperature?
I also read that if the temperature gets to high that is starts changing to
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