At 12:12 PM 10/26/2004, Paul Koning wrote:
 If it's calcium chloride you want, try snow melting
"salt" -- that's
often CaCl.
Right.  Silicagel is one of those.  I don't think calcium chloride is,
though -- but I'm not positive. 
Yes, but a mixture of NaCl and CaCl will happily suck up water
 from the air until turns into a rich, gooey,
metal-eating mess. 
A silicate solution would be less reactive, I think, and if
it dried, it's almost a protectant.  "Water glass" was once a
common way to extend the shelf life of eggs, as it prevented
evaporation through the shell.
- John