Originally Posted by
Boggie Dog
Products with glycerins are known to alarm. I don't know if they are nitrogen based or not. We also know that items with hydrogen peroxide will alarm the TSA's ETD testers.
Glycerin contains no nitrogen. It's propane where one hydrogen on each carbon atom is replaced with an -OH.
I do understand the problem with fertilizer, though. Ammonium nitrate is fertilizer. It's also high explosive, although stable enough that you need to use another explosive charge, not merely a blasting cap, to set it off.