Picramic acid

Picramic acid
Names
	Preferred IUPAC name 2-Amino-4,6-dinitrophenol
Identifiers
CAS Number	96-91-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	4103087 ;
ECHA InfoCard	100.002.314
EC Number	202-544-6;
PubChem CID	4921319;
UNII	5VDQ7GK8L3 ;
CompTox Dashboard (EPA)	DTXSID5024479 ;
	InChI InChI=1S/C6H5N3O5/c7-4-1-3(8(11)12)2-5(6(4)10)9(13)14/h1-2,10H,7H2 Key: QXYMVUZOGFVPGH-UHFFFAOYSA-N ; InChI=1S/C6H5N3O5/c7-4-1-3(8(11)12)2-5(6(4)10)9(13)14/h1-2,10H,7H2;
	SMILES c1c(cc(c(c1N)O)[N+](=O)[O-])[N+](=O)[O-];
Properties
Chemical formula	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)
log P	2.41840[1]
Refractive index (nD)	1.73 [1]
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R-phrases (outdated)	2, 4, 23/24/25
S-phrases (outdated)	28, 35, 37, 45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,[2] 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.[3]

Picramic acid is explosive and very toxic. It has a bitter taste.[4]

References

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[chemsrc-1] "Picramic acid_CAS#:96-91-3".

[2] ttp://hazmap.nlm.nih.gov/category-details?id=3267&table=copytblagents

[3] ttp://www.jbc.org/content/35/3/565.full.pdf

[4] ttp://chemicalland21.com/specialtychem/perchem/PICRAMIC%20ACID.htm