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this post was submitted on 19 Aug 2023
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Hexane? How would that be explosive? I'd expect it to just make a big fire.
@CanadaPlus @Wilshire
Fuel air bomb. Similar this one with methane but it will work with any flammable vapour.
http://www.dynamicscience.com.au/tester/solutions1/chemistry/collisiontheory.htm
Huh, that's really cool! It uses the fuel itself as a fuse to time the explosion. Hexane is a liquid, though, so the same principle wouldn't quite work.
I'm buying that it was a mistranslation of "hexogen" (the high explosive RDX) at this point.
@CanadaPlus
In liquid form absolutely agree.
But hexane is quite volatile so you can get a vapour mix fairly easily.
I have done this demo using methylated spirits by shaking the can before lighting and you get a nice boom.
Getting a whole truckload to be stable for most of the journey and then to mix enough to go boom on the bridge is not in within the expertise of this chemistry teacher but I can see it might be possible.
Interesting point about Hexogen, but would be harder to hide it.
@CanadaPlus
It is a really cool demonstration though - and very useful for showing quite a few different things by changing the fuel.