Liquid explosives
" The best known "liquid bomb" is nitroglycerine, commonly thought of as a deadly material that will detonate with the slightest movement.
This idea is a myth, said Dr Alford, chairman of the explosives company Alford Technologies.
In fact nitroglycerine, kept properly, is relatively stable and will not explode unless "you whack it quite hard," he said. Usually mixed with another material, such as nitroglycol, it would have to be ignited with a detonator."