Uses of ammonia. The major use of ammonia is as a fertilizer. It is most commonly applied directly to the soil from tanks containing the liquefied gas. The ammonia can be applied directly or in the form of ammonium salts, such as ammonium nitrate, NH4NO3, ammonium sulfate, (NH4)2SO4, and various ammonium phosphates. Urea, (H2N)2C=O, is also used as a source of nitrogen for fertilizer. Ammonia is also used in the manufacture of commercial explosives (e.g., trinitrotoluene [TNT], nitroglycerin, and nitrocellulose). In the textile industry, ammonia is used in the manufacture of synthetic fibres, such as nylon and rayon.
Huffman, Texas. Huffman, Texas is an unincorporated community of northeastern Harris County, Texas located northeast of Houston Texas on the East side of Lake Houston.
The Hopkins County Courthouse in Sulphur Springs. The structure was added to the National Register of Historic Places on April 11, 1977. Hopkins County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 35,161. Its county seat is Sulphur Springs. Hopkins County is named for the family of David Hopkins, an early settler in the area.