Chemical Properties
white to light yellow crystal powder
Definition
ChEBI: Pentafluorobenzoic acid is a perfluorinated compound. It is functionally related to a benzoic acid.
Synthesis Reference(s)
The Journal of Organic Chemistry, 35, p. 930, 1970
DOI: 10.1021/jo00829a013
Safety Profile
Poison by intraperitoneal route. A flammable liquid. When heated to decomposition it emits toxic vapors of Fí.
Purification Methods
Dissolve the acid in Et2O, treat it with charcoal, filter, dry (CaSO4), filter again, evaporate and recrystallise the residue from pet ether (b 90-100o) after adding a little toluene, to give large colourless plates. UV (H2O) has max at 265nm ( 761) (H2O). The S-benzylisothiuronium salt has m 187o (from H2O). [McBee & Rapkin J Am Chem Soc 73 1366 1951, Nield et al. J Chem Soc 166 1959, Beilstein 9 IV 956.]
