Ammonia is a compound of nitrogen and hydrogen with the formula NH3. It is normally encountered as a gas with a characteristic pungent odour. Ammonia contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to foodstuffs and fertilizers. Uses Fertilizer, Precursor to nitrogenous compounds, Cleaner, As a fuel, Antimicrobial agent for food products, Textiles Liquid ammonia is used for treatment of cotton materials, give a properties like mercerisation using alkalies. And also used for pre-washing of wool. Lifting gas - At standard temperature and pressure ammonia is lighter than air, and has approximately 60% of the lifting power of hydrogen or helium. Ammonia has sometimes been used to fill weather balloons as a lifting gas. Due to its relatively high boiling point (compared to helium and hydrogen), ammonia could potentially be refrigerated and liquefied aboard an airship to reduce lift and add ballast (and returned to a gas to add lift and reduce ballast).
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