On Tue, 12 Oct 2004, Donald Qualls wrote:
> > find no mention of air bag actuators. Mind you, I don't know what's
> > *in* them...
>
> Most airbag propellants are sodium azide, which itself is on the List
> (or was, as of a couple years ago).
My understanding is that sodium azide *used to be* the usual airbag
propellant, but is no longer common in that role. I don't know just
what they've replaced it with, though.
> This material is related to the
> lead azide used in some brands of ammunition primers; it is a shock
> sensitive primary explosive.
The (rather old) lab-safety reference I've got says that sodium azide is
not considered to present an explosion hazard under most conditions; it's
much more stable than the heavy-metal azides like lead azide. The main
explosion risk from lab work with it is unintentional conversion to the
more dangerous azides.
Henry Spencer
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