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Sodium nitrate is the chemical compound with the formula Na N O 3.This alkali metal nitrate salt is also known as Chile saltpeter (large deposits of which were historically mined in Chile) [4] [5] to distinguish it from ordinary saltpeter, potassium nitrate.
It fixates nitrogen, a highly energy-thirsty process, by converting it to ammonia via the Haber process, also known as the Haber–Bosch process. From ammonia, the vast majority of fertilisers are made, leading to protein formation in plants and then animals. Naturally occurring sodium nitrate or potassium nitrate are also used in fertilisers.
Prague powder #1 contains 6.25% sodium nitrite and 93.75% sodium chloride and is used for the preparation of all cured meats and sausages other than the dry type. [9] Prague powder #2 contains 1 ounce of sodium nitrite (6.25%) and 0.64 ounces sodium nitrate (4.0%) per pound of finished product (the remaining 14.36 ounces is sodium chloride) and ...
Industrial production of sodium nitrite follows one of two processes, the reduction of nitrate salts, or the oxidation of lower nitrogen oxides. One method uses molten sodium nitrate as the salt, and lead which is oxidized, while a more modern method uses scrap iron filings to reduce the nitrate. [4] [84] NaNO 3 + Pb → NaNO 2 + PbO
Hummers' method is a chemical process that can be used to generate graphite oxide through the addition of potassium permanganate to a solution of graphite, sodium nitrate, and sulfuric acid. It is commonly used by engineering and lab technicians as a reliable method of producing quantities of graphite oxide.
Also called Pink curing salt #2. It contains 6.25% sodium nitrite, 4% sodium nitrate, and 89.75% table salt. [4] The sodium nitrate found in Prague powder #2 gradually breaks down over time into sodium nitrite, and by the time a dry cured sausage is ready to be eaten, no sodium nitrate should be left. [3]
At the other extreme, cesium nitrate melts at 414 °C (777 °F) and decomposes at 584 °C. [2] 60:40 mixture of sodium nitrate and potassium nitrate is a liquid between 260–550 °C (500–1,022 °F). It has a heat of fusion of 161 J/g, [3] and a heat capacity of 1.53 J/(g·K). [4]
Open-pan salt production was confined to a few locations where geological conditions preserved layers of salt beneath the ground. Only five complexes of inland open-pan salt works now survive in the world: Lion Salt Works, Cheshire, United Kingdom; Royal Saltworks at Arc-et-Senans, Salins-les-Bains, France; [6] Saline Luisenhall, Göttingen, Germany; [7] the Salinas da Fonte da Bica, Rio Maior ...