The ammonium cation is a positively charged polyatomic ion with the chemical formula NH + 4.It is formed by the protonation of ammonia (NH 3).Ammonium is also a general name for positively charged or protonated substituted amines and quaternary ammonium cations (NR + 4), where one or more hydrogen atoms are replaced by organic groups (indicated by R). Commercial urea fertilizers are produced by reacting ammonia with carbon dioxide. Thus the rate of decomposition of urea is given by equation 4. Urea is also named as the carbamide, this is a chemical compound generally available in the metabolism of nitrogen in animals. At 225 1C, the melt is observed to Nitrogen Fertilizers Name Formula N% Anhydrous ammonia NH 3 82% Ammonium Nitrate NH 4NO 3 34% Urea (NH 2) 2CO 46% UAN solution 28-32% Ammonium Sulfate (NH 4) 2SO 4 21% ture, urea decomposes to ammonia and isocyanic acid, the latter leading to biuret, cyanuric acid and ammelide formation. Urea is made by reacting ammonia with CO2, the byproduct of fossil-derived ammonia production. The urea cycle or the ornithine cycle describes the conversion reactions of ammonia into urea. The urea fertilizer formula is 46-0-0, which is its NPK content, or nitrogen, phosophorus and potassium. It is largely used as the fertilizer or raw material to produce tough chemical substances. The second temperature region of 190–250 1C is dedicated to biuret decomposition accompanied by several side reactions forming cyanuric acid and ammelide. The chemical formula for the compound could be given as the +CO(NH2)2 and its molecular […] Found in large quantities in jack beans, soybeans, and other plant seeds, it also occurs in some animal tissues and intestinal microorganisms. Urea fertilizers are widely used in agriculture. Urease is significant in the history of enzymology as the They are considered an economic nitrogen source. it is kinetically controlling the decomposition of urea into ammonia gas [1]. Urea is the major end product of nitrogen metabolism in humans and mammals. As nouns the difference between urea and ammonia is that urea is (biochemistry|uncountable) a water-soluble organic compound, co(nh 2) 2, formed by the metabolism of proteins and excreted in the urine while ammonia is (inorganic compound) a gaseous compound of hydrogen and nitrogen, nh 3, with a pungent smell and taste. Urease, an enzyme that catalyzes the hydrolysis of urea, forming ammonia and carbon dioxide. What is Urea Formula? Ammonia is an extremely toxic base and its accumulation in the body would quickly be fatal.. However, the liver contains a system of carrier molecules and enzymes which quickly converts the ammonia (and carbon dioxide) into urea.. Ammonia, the product of oxidative deamination reactions, is toxic in even small amounts and must be removed from the body. Thus, for every 100 kg of urea fertilizer, 46 percent is from nitrogen, meaning it … Decomposition Rate, R k H O Urea∗∗=[ ] [ ]2 (4) Where [H 2 O] is the concentration of water, and [Urea] is the concentration of urea. Ammonia is highly soluble in water, although solubility decreases rapidly with increased temperature. The chemical formula of urea is CO(NH 2) 2 and, in nature, urea is excreted in the urine of mammals. Ammonia reacts with water in a reversible reaction to produce ammonium (NH 4 +) and hydroxide (OH-) ions, as shown in equation [1].