What are the hazards of working with Ammonia?
Ammonia is widely used as a refrigerant gas, as well as in the fertilizer industry. A colourless gas with a sharp, penetrating, intensely irritating odour and a colourless liquid under pressure, it is not considered a flammable gas. However, a large and intense energy source may cause ignition and/or explosion. Ammonia gas can decompose at high temperatures forming very flammable hydrogen and toxic nitrogen dioxide. It is a COMPRESSED GAS and a confined space explosion and toxicity hazard. Ammonia gas is a CORROSIVE GAS and may be fatal if inhaled. Ammonia gas may cause lung injury, and the liquefied gas can cause frostbite and corrosive injury to eyes and skin. Ammonia gas is a severe respiratory tract irritant. Most people can detect it by smell at 0.6 to 53 ppm. Nose and throat irritation may be noticed at concentrations as low as 24 ppm after 2-6 hours exposure. A 10-minute exposure to 30 ppm may be faintly irritating to some, while 50 ppm may be found to be moderately irritating b