On Tue, 29 Oct 2013 12:44:01 -0700, James
wrote:

...snip...
I beleive what you have is called FOAMGLAS. We have it at the chemical
plant that I work at as insulation on our pipes. I just spent the day
ripping it off one pipe. It definitely smells like rotten eggs. This is
due to the hydrgoen sulfide gas that is contained in the cells. The
company that makes it provides a safety data sheet that will inform you
of
any hazards. It can be found online at the following address.
http://www.industry.foamglas.com/en/...sds/us_origin/

Click on the 'FOAMGLAS Insulation (all grades)' link and that will tell
you all you want to know.


That sounds like those 'glass sanding' blocks. As they crumble, smells
like hydrogen sulfide, too.