Hey, I'm a teacher. Several of my students brought this video to my attention, showing the interesting clip on you-tube. It is cool. I'm sure chemistry teachers could have a field day with this one. However, I do have two concerns: 1. Is this gas readily available? 2. And, just how dangerous is this gas when inhaled--perhaps repeatedly?

According to Google,SF6 is also linked with Wikipedia. Could someone please add a post, blog, public service announcement, disclaimer etc., describing the possible dangers of inhaling this gas for kicks? Certainly, Nearly everyone at some point has goofed around with a helium balloon at a birthday party, but repeated use could be quite deadly. On a lighter note, how dangerous could it be? I mean Jay Leno used it--maybe it settled in his chin :)