Uronium nitrate

Trifluoromethanesulfonic acid, Acyl chlorides, Aromatic hydrocarbons, 0375 Trimethylsulfonium chloride, 1303 Trimethylsulfoxonium bromide, 1299 Uronium nitrate, 0494... 

Urea nitrate (UN), more properly called uronium nitrate, is an energetic salt, and as such would not be expected to have much vapour pressure however, it might be detectable due to evolved urea or nitrogen oxides. Detection of urea nitrate is essential because for over a decade it has been a frequent choice of terrorists. It was used in the bombing of the World Trade Center in New York City (Februaryl 993) and in many car bombings in Palestine. In 1992, the use of urea nitrate became so prevalent in bombings by the Shining Path that sales of urea were outlawed in Peru. 

Uronium like ammonium is the correct term for the positive ion that is derived from urea by the addition of a proton or another positive ion [91—94]. Hence, the correct name for urea nitrate would be uronium nitrate. 

DMAC does not detect urea, but uronium ion (8). Another color test for urea nitrate, which is less specific but is simple and quick, was developed in Israel by A. Bomstein. It is based on the fact that urea nitrate is highly acidic thus, the pH indicator bromophenol blue changes its color from blue to yellow upon reaction with trace amounts of urea nitrate [95]. Red pigment formation in the reaction between p-DMAC and urea nitrate [91, 92] is as follows ... 

See Bromine Dimethylformamide Chlorine Dimethylformamide Chromium trioxide Dimethylformamide Magnesium nitrate Dimethy Ifonnamide Potassium permanganate Dimethylformamide Uronium perchlorate Organic materials... 

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