MICRODETERMINATION OF NITRATES AND NITRAMINES .2. GASOMETRIC METHODS BASED ON REDUCTION WITH MERCURY, IRON(II), TITANIUM(III) AND HYDROQUINONE

Four gasometric micro-methods based on the reduction of nitrates or nitramines to nitric oxide with mercury, iron(II), titanium-(III) and hydroquinone in acid media are described. The mercury method is recommended for nitrate esters and secondary nitramines in the absence of aromatic compounds. The iron(II) method is advocated for primary nitramines and nitrate salts in the presence of aromatic compounds. Reductions with titanium(III) and hydroquinone are also successful with the nitrate salts in the presence of an aromatic moiety but the former gives less accurate results. The reduction conditions, mechanism, applications and limitations are described. © 1969.