Skip to content

Nitramine

Definition

A cyclic explosive in which the nitro groups are attached to nitrogen atoms within the ring (N-NO2), as in RDX and HMX. Nitramines achieve higher detonation velocities than aromatic nitro compounds because the N-N bond is weaker than C-N and energy release is faster.

Bond type
N-NO2, nitro group on ring nitrogen
Examples
RDX, HMX
Structure
Cyclic
Property
Higher detonation velocity than aromatic nitro explosives

Common questions

Why do nitramines detonate faster than aromatic nitro explosives like TNT?+

The N-NO2 bond in a nitramine is weaker than the ring C-N or C-NO2 bonds in an aromatic nitro compound, so the molecule fragments and releases energy more quickly, giving nitramines higher detonation velocities for comparable molecular weight.

Is every cyclic explosive a nitramine?+

No. What defines a nitramine is specifically that the nitro groups attach to ring nitrogen atoms, as in RDX and HMX, not merely that the explosive molecule happens to be cyclic.

Related terms

Critical Diameter
The minimum charge diameter below which a detonation wave cannot sustain itself, because energy losses to the sides of the charge exceed...
Detonating Cord
A cord with a PETN explosive core (5-40 g/m) that detonates at approximately 6,400 m/s when initiated. Used to connect multiple charges...
DNT Isomers (2,4-DNT and 2,6-DNT)
Dinitrotoluene intermediates and impurities present in manufactured TNT. Their molar ratio in post-blast debris or intact samples provides a manufacturing signature that...
HMTD (Hexamethylene Triperoxide Diamine)
A peroxide explosive analogue of TATP, synthesised from hexamine (hexamethylenetetramine), hydrogen peroxide, and citric acid. Similar sensitivity profile. Detected by LC-MS/MS as...
Ion Mobility Spectrometry (IMS)
A field-deployable analytical technique that separates ions by their mobility in an electric field at atmospheric pressure. Used for trace explosive detection...
Nitro Compound
A molecule containing one or more -NO2 (nitro) groups covalently bonded to carbon. TNT is an aromatic nitro compound; PETN is a...
Organic Peroxide Explosive
An explosive in which the energetic groups are peroxide linkages (-O-O-) rather than nitro groups. TATP and HMTD are the forensically significant...
Oxygen Balance
A percentage expressing the surplus or deficit of oxygen in an explosive molecule relative to stoichiometric complete oxidation of carbon to CO2...
Sublimation (TATP Context)
The transition of a solid directly to vapour without passing through a liquid phase. TATP sublimes at room temperature (vapour pressure ~6.9...

Explained in

Your journey to becoming a forensic professional starts here.

Practice with mock tests, learn from structured notes, and get your questions answered by a global forensic community, all in one place.