Ammonia gas reacts with nitric acid
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How to make ammonium nitrate fertilizer?
Ammonium nitrate fertilizer is produced by oxidizing ammonia to nitric acid and then neutralizing the nitric acid with additional ammonia. Usually the neutralization gives a solution of about 80 to 90% concentration. For production of prills, the solution is evaporated to an essentially anhydrous melt prior to solidification.
What is the most common type of nitrogen fertilizer?
Ammonium nitrate and calcium ammonium nitrate are the most commonly used straight nitrogen fertilisers in Europe, accounting for 43% of the total nitrogen used for fertilisers. They are both produced in a similar way; carbonate can be added as a last step to produce calcium ammonium nitrate.
What is ammonium nitrate?
Ammonium nitrate is an odorless, nearly colorless crystal salt. Using ammonium nitrate in gardens and large scale agricultural fields enhances plant growth and provides a ready supply of nitrogen from which plants can draw.
Why are nitrates used as fertilizers?
Nitrates are chiefly produced to be used as fertilizers in agriculture because they have high solubility and biodegradability. The main nitrate fertilizers are ammonium, sodium, potassium, and calcium salts. Nitrate is highly leachable and can easily travel with water from soil if there is excessive rainfall and can reach groundwater.