Silica gel was Re: Excercising vintage items

From: John Foust <>
Date: Tue Oct 26 17:40:08 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
>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
Received on Tue Oct 26 2004 - 17:40:08 BST

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