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Subject: binary explosive video
andyf    1/21/2008 3:06:42 PM
its fake
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free_man 12    what makes u say so?   1/21/2008 5:29:43 PM
And even if you are correct, is it that this particular video is fake, or that such a small amount of binary explosive will not have that destructive force?
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00_Chem_AJB       1/21/2008 6:32:58 PM
I would not say the video is fake, it I would say the test is misleading, for example the water melon was not on the most stable of platforms, chances are the force of the blast knocked it off, but most likely it would be in would be in chunks. Binary explosives (mixes of fuel and oxidiser) are really not that powerful when compared to a substance such as TNT where the oxidising component is part of the molecule, unless your fuel happens to be a plasticiser and you have the appropriate oxidiser.
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Jeff_F_F       1/21/2008 7:08:34 PM
First, the detonation velocity they cite (something like 4500-6500 m/s) is nothing exceptional in the world of explosives.
Second I suspect this is a very unstable explosive that isn't particularly useful in most cases because there is way too much chance of it blowing up at the wrong time. First of all, most high explosives require a significant *burst* of energy to initiate the explosion--usually requiring an explosion to do that work. The fact that that only the heat of a burning fuze is required to initiate this explosion suggests that similar sources of energy would also detonate it.
I suspect in fact that the reason they wrapped the explosive in tape is that just the friction of sliding it into the pen might have been enough to detonate it. I noted the mixer trying to stand the matchstick up and then choosing to set it down. I'm suspecting this was a safety measure becase the fall of the match stick might have been enough to set it off. This is nothing unique. There are plenty of unstable explosives. They aren't used for anything except blasting caps though, because any other use is too dangerous. In fact, that basically what they made in the video.
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00_Chem_AJB       1/21/2008 7:30:03 PM
As Jeff rightly said most explosives need a significant force to set them off, either another explosion occurring with the actual basting explosive or a strong electrical jolt. The fact this one was set off with a fuse leads me to believe it was a very unstable mixture, chances are the oxidiser used was a chlorate or a perchlorate. Both very powerful but unstable, especially the chlorate when compared to nitrate compounds.
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Shooter2K    Binary explosives not that powerfull?   1/25/2008 10:03:37 PM
Are you nuts or just ignorant?
Binary explosives are typicaly several times more powerfull than TNT! One gram of TNT will yeald about 4200J. One gram of Ethine-Oxide dispered in air will yeald over 23,000J.
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00_Chem_AJB       1/26/2008 1:11:21 PM
First off it's ethylene oxide, second it is not a true explosive as it requires atmospheric oxygen to burn, it is a fuel/air explosive. A useful explosive requires a fuel and an oxidising component; in gun powder it is potassium nitrate, in TNT it is the three nitro groups bonded to the toluene. There are substances which under go explosive decomposition such as ammonium iodide but these are fare too unsatble to have any use at all.
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00_Chem_AJB       1/26/2008 1:17:16 PM
Oh yeah, 1 gram of TNT can just sit there, and will explode VERY easily with the use of a detonator, 1 gram of ethylene oxide you need to, like you said, disperse it properly and then detonate it otherwise you just get a flash and a toxic mess.
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andyf       1/27/2008 9:05:23 PM
look at the video in slow motion,
the explosion does not occur in the portion of the watermelon where the 'bomb' is
the wreckage of the melon has some wires flying around in it.
why the wires when it was allegedly lit with some bickfords fuse?
its propaganda to scare us about raghead terrorists
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Professerpotts    looks like a firework mixture?   7/17/2010 9:56:05 AM
I know that a certain mixture of an oxidizer and and red P can't be mixed dry but can be made to mix when wet. Real powerful stuff but i don't think it would do that much damage to the melon, but when dry you can't touch it. I think it is fake also. Anybody else.
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