The resultant calcium hydroxide although quite caustic is not much of an 
environmental threat. It quickly absorbes CO2 from the atmosphere and 
becomes calcium carbonate.  Most lakes could use a dose of calcium 
carbonate due to the acid rain. :)


At 11:08 a.m. 16/06/01 -0700, you wrote:
>I believe it was the Gibson Girl rescue radio and it had a canister of
>"Calcium Hydride". Someone mentioned lithum hydride. If I remember
>correctly, lithium hydride is almost explosive with water and calcium
>hydride while getting really hot was controllable. I filled a couple
>ballons from the canisters when I was in sea survival school many many
>years ago, and they really do get hot!!; even sitting in the ocean. The
>result is a mess of calcium hydroxide, probably not too good to leave
>around.
>73's Brian
>WA5PPO  Tucson, AZ
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Jim Hannon
http://soli.inav.net/~jmhannon/
42,11.90N,91,39.26W
WB0TXL

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