Anhydrous Ammonia (NH3) Ammonia (NH3) is a toxic gas that is colorless and pungent and better known as anhydrous ammonia. When ammonia is combined with carbon dioxide to create urea, it is the building block chemical for most agricultural fertilizers. Until the end of the nineteenth century, approximately all fertilizers were organic in the modern sense. They were obtained from composting agricultural, animal and human waste. As the world population increased, so did its need to feed itself. Lots of years of slash and burn agriculture, along with growing the same crops in the same fields for scores of years had led to severe soil depletion. Imported guano was getting pricey as crops yields were falling. Haber’s process of directly combining nitrogen and hydrogen to create ammonia was the genesis of an entire synthetic fertilizer industry in Europe and North America. Once high quality, plentiful and inexpensive ammonia was available, in addition to agricultural chemicals, a new synthetic dye industry developed, as well as the first successful automatic document duplication process. In our time most world-scale ammonia is produced and directly consumed 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. St. Louis customers looking for a reliable, local source to produce ammonia specialty gases should contact Cee Kay Supply, Inc.. Their strong record of service in the area coupled with the backing from PurityPlus® Specialty Gases makes giving them an easy decision.