|Preferred IUPAC name
3D model (JSmol)
|Molar mass||199.12 g/mol|
|Melting point||169 °C (336 °F; 442 K)|
|Boiling point||386.3 °C (727.3 °F; 659.5 K)|
|R-phrases (outdated)||2, 4, 23/24/25|
|S-phrases (outdated)||28, 35, 37, 45|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).
|what is ?)(|
Picramic acid, also known as 2-amino-4,6-dinitrophenol, 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.