Related Experiment Video
Updated: Jun 28, 2026

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography
Published on: May 16, 2014
Ion-selective electrodes in organic functional group analysis: microdetermination of nitrates and nitramines with use
1Research Microanalytical Laboratory, Department of Chemistry, Faculty of Science Ain Shams University, Cairo, Egypt.
Abstract:
A simple, selective and accurate method has been described for the rapid micro and submicro determination of organic nitrates and nitramines. It is based on reaction with mercury-sulphuric acid mixture for 5 min at room temperature followed by potentiometric titration of the mercurous ions released, a solid-state iodide-sensitive electrode being used. Three equivalents of potassium iodide as titrant are consumed per mole of nitrate or nitramine group. The results obtained, with sample sizes ranging from 1.0 to 50 mumole, are precise to +/- 0.2% and the average recovery is 99%. None of the other nitrogenous functional groups responds to this reaction.
Related Concept Videos
Redox Titration: Iodimetry and Iodometry
Gravimetry: Inorganic And Organic Precipitating Agents
Diazonium Group Substitution: –OH and –H
Preparation of Amines: Reduction of Oximes and Nitro Compounds
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
Potentiometry: Membrane Electrodes
Preparation of Nitriles

