Search results
Results from the WOW.Com Content Network
A solution of nitric acid, water and alcohol, nital, is used for etching metals to reveal the microstructure. ISO 14104 is one of the standards detailing this well known procedure. [45] Nitric acid is used either in combination with hydrochloric acid or alone to clean glass cover slips and glass slides for high-end microscopy applications. [46]
Another method involves the reaction of urea, nitric acid and sulfuric acid: [54] 2 (NH 2) 2 CO + 2 HNO 3 + H 2 SO 4 → 2 N 2 O + 2 CO 2 + (NH 4) 2 SO 4 + 2 H 2 O. Direct oxidation of ammonia with a manganese dioxide-bismuth oxide catalyst has been reported: [55] cf. Ostwald process. 2 NH 3 + 2 O 2 → N 2 O + 3 H 2 O
Safety data sheet (SDS) ... neutralizing free radicals by nitric oxide ... [65] [66] The sodium nitrite induces methemoglobinemia in swine, ...
Nitric acid is generated via the Ostwald process by oxidation of ammonia with air over a platinum catalyst at 700–850 °C (1,292–1,562 °F), ≈9 atm. Nitric oxide and nitrogen dioxide are intermediate in this conversion: [44] NH 3 + 2 O 2 → HNO 3 + H 2 O. Nitric acid is used for the production of fertilisers, explosives, and many ...
Methyl nitrate is a sensitive explosive.When ignited it burns extremely fiercely with a gray-blue flame. Methyl nitrate is a very strong explosive with a detonation velocity of 6,300 m/s, [8] like nitroglycerin, ethylene glycol dinitrate, and other nitrate esters.
The industrial production of ammonium nitrate entails the acid-base reaction of ammonia with nitric acid: [12] HNO 3 + NH 3 → NH 4 NO 3. The ammonia required for this process is obtained by the Haber process from nitrogen and hydrogen. Ammonia produced by the Haber process can be oxidized to nitric acid by the Ostwald process.
It is produced by treating limestone with nitric acid, followed by neutralization with ammonia: CaCO 3 + 2 HNO 3 → Ca(NO 3) 2 + CO 2 + H 2 O. It is also an intermediate product of the Odda Process: Ca 5 (PO 4) 3 OH + 10 HNO 3 → 3 H 3 PO 4 + 5 Ca(NO 3) 2 + H 2 O. It can also be prepared from an aqueous solution of ammonium nitrate, and ...
Solutions of dinitrogen pentoxide in nitric acid can be seen as nitric acid with more than 100% concentration. The phase diagram of the system H 2 O − N 2 O 5 shows the well-known negative azeotrope at 60% N 2 O 5 (that is, 70% HNO 3), a positive azeotrope at 85.7% N 2 O 5 (100% HNO 3), and another negative one at 87.5% N 2 O 5 ("102% HNO 3 ...