Nitric acid is a strong oxidizing and corrosive acid, which belongs to one of the six inorganic strong acids and is an important chemical raw material. In industry, it can be used to make fertilizers, pesticides, explosives, dyes, salt and so on. In organic chemistry, the mixed solution of concentrated nitric acid and concentrated sulfuric acid is an important nitration reagent, and its aqueous solution is commonly known as nitric acid water or ammonia nitrogen water. The hazard symbols are O (oxidant) and C (corrosive corrosion products). The anhydride of nitric acid is dinitrogen pentoxide.

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In the 8th century, Jabir ibn Hayyan, an Arab alchemist, discovered and produced nitric acid in the process of saltpeter dry distillation, which is the earliest record of nitric acid. ?

1905, a factory producing nitric acid by arc method appeared in Norway, which was the earliest attempt of nitric acid industrialization in history.

1908 Germany built a 3-ton nitric acid plant with platinum mesh as catalyst.

19 13 synthetic ammonia came out, and the production of nitric acid by ammonia oxidation began to enter the industrial stage, and it is still the main method to produce nitric acid in the world.

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