Nitrates

salts of nitric acid, HNO₃. Colorless crystalline compounds that are stable at ordinary temperatures; at high temperatures they release oxygen readily and are strong oxidizing agents (for example, 2KNO₃ = 2KNO₂ + O₂). All nitrates are highly soluble in water.

Nitrates are produced by the action of nitric acid on metals, metal oxides, and certain salts in neutral or slightly acidic solutions by exchange reactions or by the action of NO₂ on bases (nitrites are also produced by the latter reaction). The nitrates of a number of elements (sodium, potassium, and calcium) occur naturally. Of these, only deposits of sodium nitrate (Chile saltpeter) are of practical importance.

Nitrates are widely used as fertilizers (sodium, potassium, ammonium, and calcium salts), in the production of explosives (ammonium and barium salts), and as mordants in dyeing (chromium, iron, aluminum, and copper salts). Ammonium nitrates and the nitrates of the alkali and alkaline-earth metals are also called saltpeters.

nitrates

A family of chemically stable forms of inorganic nitrogen, which are formed as part of the natural breakdown of organic matter. Nitrates are ingested in vegetables and absorbed from the gastrointestinal tract; an estimated 25% of absorbed nitrates are released into the saliva, 20% of which are converted into nitrites. Nitrates are manufactured for use as fertilisers and explosives and tend to accumulate in the environment, as the uptake of nitrates by plants is relatively slow.

单词	nitrates
释义	DictionarySeenitrate Nitrates Nitrates salts of nitric acid, HNO₃. Colorless crystalline compounds that are stable at ordinary temperatures; at high temperatures they release oxygen readily and are strong oxidizing agents (for example, 2KNO₃ = 2KNO₂ + O₂). All nitrates are highly soluble in water. Nitrates are produced by the action of nitric acid on metals, metal oxides, and certain salts in neutral or slightly acidic solutions by exchange reactions or by the action of NO₂ on bases (nitrites are also produced by the latter reaction). The nitrates of a number of elements (sodium, potassium, and calcium) occur naturally. Of these, only deposits of sodium nitrate (Chile saltpeter) are of practical importance. Nitrates are widely used as fertilizers (sodium, potassium, ammonium, and calcium salts), in the production of explosives (ammonium and barium salts), and as mordants in dyeing (chromium, iron, aluminum, and copper salts). Ammonium nitrates and the nitrates of the alkali and alkaline-earth metals are also called saltpeters. nitrates nitrates A family of chemically stable forms of inorganic nitrogen, which are formed as part of the natural breakdown of organic matter. Nitrates are ingested in vegetables and absorbed from the gastrointestinal tract; an estimated 25% of absorbed nitrates are released into the saliva, 20% of which are converted into nitrites. Nitrates are manufactured for use as fertilisers and explosives and tend to accumulate in the environment, as the uptake of nitrates by plants is relatively slow.
随便看	brahmsian brahms johannes brahms, johannes brahmán brahui brai braic braid braide braided braided channel braided endocardial defibrillation lead braided line braidedly braided river braided river quilters braided stream braided suture (4) braided wire braided wood veneer laminate braider braiding braidism braid, james braid pattern