Originally Posted by wierdo
The only reason to be particularly concerned with them is that they could contain high strength peroxide. I'm not, but I think that anyone trying to synthesize TATP in an aircraft lav wouldn't have much luck.
IIRC, a chem professor said in class once that hydrogen peroxide can generally only get to a 30% concentration before it starts getting really unstable. It is VERY difficult to have a higher concentration without more extreme methods of containment.