Picramic acid

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Picramic acid
Picramic acid.svg
Names
Preferred IUPAC name
2-Amino-4,6-dinitrophenol
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.002.314
EC Number 202-544-6
Properties
C6H5N3O5
Molar mass 199.12 g/mol
Appearance Brown paste
Density 1.749 g/cm3
Melting point 169 °C (336 °F; 442 K)
Boiling point 386.3 °C (727.3 °F; 659.5 K)
Hazards
R-phrases (outdated) 2, 4, 23/24/25
S-phrases (outdated) 28, 35, 37, 45
Flash point 187.5 °C (369.5 °F; 460.6 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Picramic acid, also known as 2-amino-4,6-dinitrophenol,[1] is an acid obtained by neutralizing an alcoholic solution of picric acid with ammonium hydroxide. Hydrogen sulfide is then added to the resulting solution, which turns red, yielding sulfur and red crystals. These are the ammonium salts of picramic acid, from which it can be extracted using acetic acid.[2]

Picramic acid is explosive and very toxic. It has a bitter taste.[3]

References[edit]