ammonium nitrate

Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

ammonium nitrate,

chemical compound, NH4NO3, that exists as colorless, rhombohedral crystals at room temperature but changes to monoclinic crystals when heated above 32°C;. It is extremely soluble in water and soluble in alcohol and liquid ammonia. It is prepared commercially by reaction of nitric acid and ammoniaammonia,
chemical compound, NH3, colorless gas that is about one half as dense as air at ordinary temperatures and pressures. It has a characteristic pungent, penetrating odor.
..... Click the link for more information.
. Major uses are in fertilizersfertilizer,
organic or inorganic material containing one or more of the nutrients—mainly nitrogen, phosphorus, and potassium, and other essential elements required for plant growth.
..... Click the link for more information.
 and explosivesexplosive,
substance that undergoes decomposition or combustion with great rapidity, evolving much heat and producing a large volume of gas. The reaction products fill a much greater volume than that occupied by the original material and exert an enormous pressure, which can be
..... Click the link for more information.
. For fertilizers it is in the form of small clay-coated pellets. For explosives it is sometimes mixed with other substances, e.g., TNT, so that it is more easily detonated. It is also used in solid-fuel rocket propellants, in pyrotechnics, and in the production of nitrous oxide.

Ammonium Nitrate


(NH4NO3) the ammonium salt of nitric acid. Colorless, hygroscopic crystals. Ammonium nitrate is a strong oxidizing agent; when dry, it is exploded by detonators. Three brands, A, B, and V, are produced in the USSR. Brands A and B are used in industry in explosive mixtures (ammonites). Brand V is the most widely used nitrogen fertilizer in the USSR; it is effective, containing about 35 percent nitrogen, and exhibits physiological acidity. Various conditioning additives are added to brand V to decrease its hygroscopicity and caking tendency. Ammonium nitrate is used for all crops and in all types of soils as the main fertilizer and as a supplement.

ammonium nitrate

[ə′mōn·yəm ′nī‚trāt]
(inorganic chemistry)
NH4NO3 A colorless crystalline salt; very insensitive and stable high explosive; also used as a fertilizer.
References in periodicals archive ?
In addition, the company claimed back the money for the non-delivered ammonium nitrate from the Supplier in the amount of approximately EUR 1.
Thermal decomposition of the ammonium nitrate with feeding the nitrogen dioxide into the cuvette is studied to estimate the alleged initiating action of nitrogen dioxide.
More than 1,300 facilities in 47 states reported having ammonium nitrate to DHS, but the GAO report said that data are incomplete.
There's still the question of what set off the initial fire -- whether the company also stored some ammonium nitrate or whether there was some other source of combustion.
Results of statistical analysis of first priming leaves of burley tobacco showed that ammonium nitrate fertilizer levels significantly affected leaf area of first priming in %1 level and plant density not affected leaf area of first priming in %5 level also the interaction between density and ammonium nitrate rate effects on leaf area of first priming was not significant at %5 level (Table 2).
He said the ammonium nitrate had been smuggled from Pakistan.
The Danish DLG company, which is responsible for most fertiliser sales in Denmark, says that fertiliser with a high ammonium nitrate content can be replaced with a lower grade product.
23 March 2011 - Norwegian fertiliser maker Yara International ASA (OSL: YAR) said today it will build a technical ammonium nitrate (TAN) plant in Burrup, Western Australia, for USD700m.
At present, Apache Nitrogen Products produces solid and liquid ammonium nitrate, ammonium nitrate-based fertilizers, nitric acid and aqua ammonia primarily for agricultural and mining customers.
The unit said it would continue producing limestone ammonium nitrate, ammonium sulphate and a range of ammonium nitrate and ammonium sulphate based liquid and granular NPK fertiliser blends.
The explosion was triggered when a mix of sodium dichloroisocyanurate and ammonium nitrate was dumped on a stockpile of 300 tonnes of additional ammonium nitrate.
You can turn a bag of ammonium nitrate into a bomb in a matter of hours", said Col.