3276. 3,5-Dinitrobenzoic Acid

Nomenclature

CAS number: 99-34-3
C7H4N2O6; mol wt 212.12.
C 39.64%, H 1.90%, N 13.21%, O 45.26%.

Description and references

Prepd by nitration of benzoic acid with fuming nitric acid: Brewster et al., Org. Synth. 22, 48 (1942); Saunders et al., Biochem. J. 36, 368 (1942). Purification: Jensen et al., Chem. Weekbl. 43, 731 (1947), C.A. 42, 2307d (1948).

Chemical structure

Properties

Monoclinic prismatic crystals from alc. mp 205-207°, (mp 206.5-207.2° purified). One gram dissolves in 53 parts of boiling water; much less sol in cold water. Very sol in alc and glacial acetic acid; sparingly sol in ether, carbon disulfide and benzene. Sublimes.

Use

Identification of alcohols, alkyl halides; chromatographic determination of the essential oil constituents.