From: email@example.com (Gerald L. Hurst)
Subject: Re: Is CaCl2 a good humidity absorber to protect chemicals ?
Date: 15 Mar 1996 05:29:40 GMT
In article <firstname.lastname@example.org>, email@example.com (John W.
>The disadvantage of CaCl2 is that, unlike SiO2, it deliquesces when it
>absorbs enough moisture (i.e. it turns to a slimy liquid). It also
>can't be regenerated.
Sure it can be regenerated - just heat it.
It only liquifies after it has absorbed a LOT of water. Just take
it out before it reaches saturation of its lower ligand water
capacity (CaCl2:2H2O) and the solid hydrate then begins to
deliquesce as the weakly-bonded hexahydrate. You can regenerate
the dessicant at 200C.