Question: What is the most dangerous chemical in the world?

Aislinn Coghlan answered on 3 Feb 2015:

Hi Funky joe,

We chatted about this a bit in the chat today. Hydrogen sulphide is pretty nasty stuff. It numbs your senses at certain concentrations so you don’t know you are inhaling it. Very low concentrations can kill you and you wouldn’t even know it is happening.

Pentaerythritol tetranitrate is one of the most powerful explosive known to man.