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Trinitroaniline structure.svg
Picramide molecule
CAS number 489-98-5 N
PubChem 10271
ChemSpider 9852 YesY
Jmol-3D images Image 1
Molecular formula C6H4N4O6
Molar mass 228.12 g/mol
Appearance yellow/orange/red powder
Density 1.8 g/cm3
Melting point 188 °C (370 °F; 461 K)
Boiling point explodes before boiling
Solubility in water insoluble
Main hazards instantaneous explosion
Flash point unknown
Autoignition temperature unknown
Explosive data
Shock sensitivity unknown
Friction sensitivity unknown
Explosive velocity 7,300 m/s
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

2,4,6-Trinitroaniline, C6H4N4O6, abbreviated as TNA and also known as picramide, a nitrated amine. Materials in this group range from slight to strong oxidizing agents. If mixed with reducing agents, including hydrides, sulfides and nitrides, they may begin a vigorous reaction that culminates in a detonation. The aromatic nitro compounds may explode in the presence of a base such as sodium hydroxide or potassium hydroxide even in the presence of water or organic solvents. The explosive tendencies of aromatic nitro compounds are increased by the presence of multiple nitro groups.[1] The appearance of trinitroaniline varies from yellow to orange to red depending on its purity and concentration.


Trinitroaniline is only used in modern times in the small warheads of some explosive devices such as mortars. In World War II it was used by Imperial Japanese Navy as Type 97 bakuyaku (Model 1931 explosive) in some versions of gun projectiles instead of less stable burster schimose.[2] It was also used in the Yokosuka MXY-7 Ohka, a kamikaze antishipping vessel.

Health and safety[edit]

Trinitroaniline is dangerously explosive. Symptoms of exposure to this compound may include skin and eye irritation, headache, drowsiness, weakness, cyanosis, and respiratory distress.[medical citation needed]


See also[edit]