What is nitrate urea?
urea nitrate is a colorless crystalline compound of carbon, hydrogen, oxygen and nitrogen with a chemical formula (NH 2 ) 2 It is prepared by reaction of urea with nitric acid: (NH 2 ) 2 CO + HNO 3 -> (NH 2 ) 2 Co.hnno 3 The compound has an ionic nature with urea-bound to the atom of hydrogen of nitric acid-forming an cation and nitrate (NO3) forming anion. It is soluble in water, but much less in nitric acid, so it tends to crystallize after the above reaction. Nitrate urea decomposes explosive when it is subjected to shock; However, its sensitivity is relatively low, so it is normally relatively safe, even if it can explode with prolonged heating.
Explosives generally require fuel, which would be some kind of oxidizable material and oxidation to thisSti usually a cloth that supplies oxygen. In the case of urea nitrate, as with most commercial and military explosives, fuel and oxidizer are present in the same molecule and, like most compounds of this type, are classified as a high explosive. It has a detonation speed, ie the speed at which the shock wave passes explosive, about 11.155 feet per second (3,400 meters per second), about half the trinitrotoluene (TNT). High explosives may be classified as primary or secondary depending on whether they can explode without detonator; Urea nitrate is classified as a secondary explosive because a small explosive charge is usually required to ensure sufficient shock to cause detonation.
nitrate urea normally does not explode if it is ignited but easily burns in the air and produces carbon dioxide, water and nitrogen oxides. However, it can explode if it is exposed to prolonged heating or in contact with the joke some other chemicals. The compound is myThey are likely to explode when it is wet, and in the presence of water it tends to non -violently decompose into urea and nitric acid.
Explosive properties of this compound have led to some commercial use, but gained acquaintance for its use in improvised explosive devices (IED). Nitric acid and nitric acid are made on a large scale for use in fertilizer sectors - urea is a widely used fertilizer in itself - and the availability of these raw materials in volumes combined with ease of nitrate synthesis has led to terrorist groups. The explosive devices that use it are sometimes described as "fertilizer bombs", but this term is more often applied to ammonium nitrate bombs, which is another commonly used fertilizer. It is assumed that nitrate urea was the main explosive used in attacking a bomb in 1993 at the World Trade Center.
Simple Field Test cane identify nitrate urea by using his reaction with P-dimethylaminocinnamaldehyde (P-DMAC) to form a strongly colored red compound. Urea and other related compounds do not create this reaction, which reduces the chances of a false positive result. After explosion, however, it is difficult to chemically verify that this compound has been involved because it would only be present in trace amounts and decomposition products are similar to some other explosives based on nitrates.