Anhydrous Ammonia (NH3) Ammonia (NH3) is a colorless, pungent, toxic gas more commonly known as anhydrous ammonia. When ammonia is used in combination with carbon dioxide to make urea, it is the building block chemical for most agricultural fertilizers. Until the end of the nineteenth century, almost all fertilizers were organic in the modern sense. They were derived from composting agricultural, animal and human waste. As the world population increased, so did its need to feed itself. Hundreds of years of slash and burn agriculture, along with raising the same crops in the same fields for decades had led to severe soil depletion. Imported guano was getting costly as crops yields were falling. Haber’s process of directly combining nitrogen and hydrogen to create ammonia created an entire synthetic fertilizer industry in Europe and North America. Once good quality, plentiful and inexpensive ammonia became available, in addition to agricultural chemicals, a cutting-edge synthetic dye industry developed, as well as the first successful automatic document duplication process. Today most world-scale ammonia is manufactured and directly used in the agriculture industries. Cylinder quantities of Anhydrous 99.99% Pure Ammonia are also used in agricultural and fertilizer research, metal treatment, wastewater treatment and pharmaceuticals, and when mixed with water to create aqueous ammonia, in cleaning products. Ultra High Purity Ammonia, 99.999% is used as a blending component in calibration gases for emission and personal hygiene monitoring, as well as some specialty semiconductor manufacturing. Denver customers looking for a reliable, local source to produce ammonia specialty gases should contact Rocky Mountain Air Solutions. Their strong record of service in the area coupled with the backing from PurityPlus® Specialty Gases makes giving them an easy decision.