Note 36 bis — Chapter VI · TTHE COMPOUNDS OF NITROGEN WITH HYDROGEN AND OXYGEN

This is explained by saying that in true nitro-compounds the residue of nitric acid NO2 takes the place of the hydrogen in the hydrocarbon group. For example, if C6H5OH be given, then C6H4(NO2)OH will be a true nitro-compound having the radical properties of C6H5OH. If, on the other hand, the NO2 replace the hydrogen of the aqueous radicle (C6H5ONO2), then the chemical character varies, as in the passage of KOH into KONO2 (nitre) (see Note 37 and Organic Chemistry).