Picric Acid Properties, Molecular Formula, Applications - WorldOfChemicals

Picric Acid Properties

Picric Acid

Drilling Salt-Molecule 3D Struture
Molecule 3D Structure Image
Drilling Salt-Molecule Struture
Molecule Structure Image



Picric acid is one of the most acidic phenols. It has found some use in organic chemistry for the preparation of crystalline salts of organic bases for the purpose of identification and characterization. In metallurgy a picric acid etch has been commonly used in optical metallography to reveal prior austenite grain boundaries in ferritic steels. The hazards associated with picric acid has meant it has largely been replaced with other chemical etchants. Much less commonly, wet picric acid has been used as a skin dye or temporary branding agent. It reacts with proteins in the skin to give a dark brown color that may last as long as a month. Picric acid was stocked in pharmacies as an antiseptic and as a treatment for burns, malaria, herpes, and smallpox.

Chemical Properties

AR Assay 99.8%
Acidity 0.38
Appearance Colorless to yellow solid
Boiling Point > 300 °C
CAS Number 88-89-1
Density 1.763 g/cm3
EINECS Number 201-865-9
HS Code 290890900
IUPAC Name 2,4,6-Trinitrophenol
InChI 1S/C6H3N3O7/c10-6-4(8(13)14)1-3(7(11)12)2-5(6)9(15)16/h1-2,10H
LR Assay 99.0%
Lab Grade LR;AR
Melting Point 122.5 °C
Molar Mass 229.10 g/mol
Molecular Formula C6H3N3O7
NFPA 704 H-3,F-3,R-4,C-NA
RTECS Number TJ7875000
Solubility 14 g/l
Synonyms Carbazotic Acid;Phenol Trinitrate;Picronitric Acid;Trinitrophenol;2,4,6-Trinitro-1-Phenol;2-Hydroxy-1,3,5-Trinitrobenzene;TNP;Melinite
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