Explosives -- Forensic Chem

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Last updated 2:15 AM on 10/8/26
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11 Terms

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Classes of organic explosive

nitroaromatics, poly-nitro cage compounds, nitrate esters, peroxides, and nitramines

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Nitroaromatic compound

trinitrotoluene (TNT)

<p>trinitrotoluene (TNT)</p>
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nitrate ester

nitroglycerine

<p>nitroglycerine</p>
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nitramine

cyclotrimethylenetrinitramine (RDX)

<p>cyclotrimethylenetrinitramine (RDX)</p>
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peroxide

tri-acetone triperoxide (TATP)

<p>tri-acetone triperoxide (TATP)</p>
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poly-nitro cage compound

1,3 dinitroadamantane

<p>1,3 dinitroadamantane</p>
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Primary explosives examples

lead azide, lead styphnate, mercury fulminate

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Define deflagration

A rapid, surface phenomenon causing explosion under confinement, producing a pressure wave. Speed of explosion is 1000 m/s.

Debris shows signs of petalling.

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Define detonation

Instantaneous combustion, with breakdown at a molecular level. Speed is 2000-85000 m/s.

Debris shows brisance.

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Confirmatory tests for explosives

FTIR, LCMS, LCMSMS, Ion chromatography, GC-MS, GC-TEA

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Difference between GC-TEA and GC-MS

TEA is selective and only detects compounds producing NO when pyrolysed