Silica gel was Re: Excercising vintage items

John Foust jfoust at threedee.com
Tue Oct 26 17:40:08 CDT 2004


At 05:26 PM 10/26/2004, Pete Turnbull wrote:
>For a different reason, though.  There's a slow double-decomposition
>reaction between the calcium carbonate in the shell and the sodium
>silicate (water glass) which leaves a layer of relatively impermeable
>calcium silicate on the eggshell.  Sodium silicate isn't a drying
>agent.
>The drying action of silica gel (silicon dioxide) is due to adsorbtion,

That's what I get for posting to a list of known pedants without Googling
beforehand to make myself look smarter than I am.  :-)

- John




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