I think the best one in this series is chlorine trifluoride [1]:<p>&gt; The compound also a stronger oxidizing agent than oxygen itself, which also puts it into rare territory. That means that it can potentially go on to “burn” things that you would normally consider already burnt to hell and gone, and a practical consequence of that is that it’ll start roaring reactions with things like bricks and asbestos tile.<p>[1] <a href="http:&#x2F;&#x2F;blogs.sciencemag.org&#x2F;pipeline&#x2F;archives&#x2F;2008&#x2F;02&#x2F;26&#x2F;sand_wont_save_you_this_time" rel="nofollow">http:&#x2F;&#x2F;blogs.sciencemag.org&#x2F;pipeline&#x2F;archives&#x2F;2008&#x2F;02&#x2F;26&#x2F;san...</a>