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It is the anion of nitronic acid R 1 R 2 C=N + (−O −)−OH (sometimes also called an aci-nitro compound, [3] or an azinic acid [4]), a tautomeric form of a nitro compound. Just as aldehydes and ketones can exist in equilibrium with their enol tautomer, nitro compounds exist in equilibrium with their nitronate tautomer under basic conditions .
The salt is protonated forming the nitronic acid 2 (in some cases these nitronates have been isolated) and once more to the iminium ion 3. This intermediate is attacked by water in a nucleophilic addition forming 4 which loses a proton and then water to the 1- nitroso -alkanol 5 which is believed to be responsible for the deep-blue color of the ...
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The nitronium ion, [N O 2] +, is a cation. It is an onium ion because its nitrogen atom has +1 charge, similar to ammonium ion [NH 4 ] + . It is created by the removal of an electron from the paramagnetic nitrogen dioxide molecule NO 2 , or the protonation of nitric acid HNO 3 (with removal of H 2 O ).
Nitronic 30 is used to lighten transportation vehicles. [5] Buses and railcars benefit from the high strength-to-weight ratio for weight savings. Nitronic 40 is used at cryogenic temperatures. [6] and in the aerospace industry as hydraulic tubing. [1] Nitronic 50 is used in marine environments, including boat shafting and solid rod rigging. [7]
The FDA has banned Red Dye No. 3 dye from food and ingested drug products. Here are the food products containing Red 3 and how the ban affects you.
3-Nitropropionic acid found in fungi and plants . Nitropentadecene is a defense compound found in termites. Aristolochic acids are found in the flowering plant family Aristolochiaceae. Nitrophenylethane is found in Aniba canelilla. [18] Nitrophenylethane is also found in members of the Annonaceae, Lauraceae and Papaveraceae. [19]
Scientists at San Jose State University say that a large fire that burned at a battery plant in Monterrey County, California earlier this month has left heightened levels of heavy metals in a ...