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  2. UAN - Wikipedia

    en.wikipedia.org/wiki/UAN

    The combination of urea and ammonium nitrate has an extremely low critical relative humidity (18% at 30 °C) and can therefore only be used in liquid fertilizers. The most commonly used grade of these fertilizer solutions is UAN 32.0.0 (32%N) known as UN32 or UN-32, which consists of 45% ammonium nitrate , 35% urea and only 20% water.

  3. Ammonium lactate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_lactate

    Ammonium lactate is a compound with formula NH 4 (C 2 H 4 (OH)COO). It is the ammonium salt of lactic acid. It has mild anti-bacterial properties. It has E number "E328" and is the active ingredient of the skin lotions Amlactin and Lac-Hydrin. [1] Ammonium lactate is the chemical combination of lactic acid and ammonium hydroxide.

  4. Bosch-Meiser process - Wikipedia

    en.wikipedia.org/wiki/Bosch-Meiser_process

    Urea plant using ammonium carbamate briquettes, Fixed Nitrogen Research Laboratory, ca. 1930 Carl Bosch, 1927. The Bosch–Meiser process is an industrial process, which was patented in 1922 [1] and named after its discoverers, the German chemists Carl Bosch and Wilhelm Meiser [2] for the large-scale manufacturing of urea, a valuable nitrogenous chemical.

  5. Ammonia volatilization from urea - Wikipedia

    en.wikipedia.org/wiki/Ammonia_volatilization...

    Urease is a naturally occurring enzyme that catalyzes the hydrolysis of urea to unstable carbamic acid. Rapid decomposition of carbamic acid occurs without enzyme catalysis to form ammonia and carbon dioxide. [2] [3] The ammonia will likely escape to the atmosphere unless it reacts with water to form ammonium (NH 4 +) according to the following ...

  6. Diesel exhaust fluid - Wikipedia

    en.wikipedia.org/wiki/Diesel_exhaust_fluid

    DEF is a 32.5% solution of urea, (NH 2) 2 CO. When it is injected into the hot exhaust gas stream, the water evaporates and the urea thermally decomposes [13] to form ammonia (NH 3) and isocyanic acid (HNCO): (NH 2) 2 CO → NH 3 + HNCO. The isocyanic acid reacts with the water vapor and hydrolyses to carbon dioxide and ammonia: HNCO + H 2 O ...

  7. Selective catalytic reduction - Wikipedia

    en.wikipedia.org/wiki/Selective_catalytic_reduction

    x reduction, and in severe cases this can result in the ammonia or urea being oxidized and a subsequent increase in NO x emissions. These poisons are alkali metals , alkaline earth metals , halogens , phosphorus , sulfur , arsenic , antimony , chromium , heavy metals ( copper , cadmium , mercury , thallium , and lead ), and many heavy metal ...

  8. Zakłady Azotowe Puławy - Wikipedia

    en.wikipedia.org/wiki/Zakłady_Azotowe_Puławy

    The decision to build plants producing Nitrogen fertilizer in Puławy, was taken on December 19, 1960. It took nearly 5 years to build the plant. Ammonia and urea's production was finally launched on 4 December 1966. In the years 1967–1970, production of carbon dioxide and dry ice has been started. [4] Grupa Azoty Zakłady Azotowe "Puławy"

  9. Berthelot's reagent - Wikipedia

    en.wikipedia.org/wiki/Berthelot's_reagent

    Phenol in the Berthelot reagent can be replaced by a variety of phenolic reagents, the most common being sodium salicylate, which is significantly less toxic. [1] This has been used for blood urea nitrogen (BUN) determinations and commonly is used to determine water and soil total and ammonia-N. Replacement of phenol by 2-phenylphenol reduces interferences by a variety of soil and water ...

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