Check us out at http://www.tutorvista.com//videos Ammonia is the single most widely used compound in the fertilizer industry. It is the starting material for the production of a various number of nitrogenous fertilizers like ammonium phosphates, ammonium sulfate, ammonium nitrate etc. It is used directly or indirectly as the source for the production of hexamethylenedeamine for the manufacture of nylon 6,6. In the manufacture of rayon, ammonia is used in the preparation of ammoiacal copper hydroxide soulutio for dissolving the copper linters. Oxidation of propylene with ammonia gives acrylonitrile, used for the manufacture of acrylic fibres, resins, and elastomers. Hexamethylenetetramine, produced from ammonia and formaldehyde, is used in the manufacture of phenolic thermosetting resins. Toluene 2,4 disocyanate (TDI), employed in the production of polyurethane foam, indirectly consumes ammonia because nitric acid is a raw material in the TDI manufacturing process. Urea produced from ammonia is used in the manufacture of urea-formaldehyde synthetic resins. Melamine is produced by polymerization of dicyandiamine and high pressure high temperature pyrolysis of urea, in the presence of ammonia Lesser known uses of Ammonia are 1. As a refrigerant in both compression and absorption systems 2. In the pulp and paper industry for the pulping of wood 3. As a corrosion inhibitor in petroleum refineries. 4. In rubber production for the stabilization of natural and synthetic latex to prevent coagulaion. 5. In the food and beverage industry as a source of nitrogen required for the growth of yeast and micro-organism 6. As a curing agent in tanning industries.
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