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Hydrazine is an inorganic compound with the chemical formula N 2 H 4.It is a simple pnictogen hydride, and is a colourless flammable liquid with an ammonia-like odour.Hydrazine is highly hazardous unless handled in solution as, for example, hydrazine hydrate (N 2 H 4 ·xH 2 O).
Hydrazines (R 2 N−NR 2) are a class of chemical compounds with two nitrogen atoms linked via a covalent bond and which carry from one up to four alkyl or aryl substituents. . Hydrazines can be considered as derivatives of the inorganic hydrazine (H 2 N−NH 2), in which one or more hydrogen atoms have been replaced by hydrocarbon grou
Ketazines are also important intermediates in the industrial production of hydrazine hydrate by the peroxide process. [3] In the presence of an oxidant, ammonia and ketones react to give hydrazine via ketazine: 2 Me(Et)C=O + 2 NH 3 + H 2 O 2 → Me(Et)C=NN=C(Et)Me + 2 H 2 O. The ketazine can be hydrolyzed to the hydrazine and regenerate the ketone:
Hydrazine sulfate, more properly hydrazinium hydrogensulfate, is a salt of the cation hydrazinium and the anion bisulfate (hydrogensulfate), with the formula N 2 H 6 SO 4 or more properly [N 2 H 5] + [HSO 4] −.
Carbohydrazide is the chemical compound with the formula OC(N 2 H 3) 2. It appears as a white solid that is soluble in water, [1] [2] but not in many organic solvents, such as ethanol, ether or benzene. It decomposes upon melting. [2] A number of carbazides are known where one or more N-H groups are replaced by other substituents. They occur ...
Alkyl hydrazones are 10 2 - to 10 3-fold more sensitive to hydrolysis than analogous oximes. [9] When derived from hydrazine itself, hydrazones condense with a second equivalent of a carbonyl to give azines: [10] R 2 C=N−NH 2 + R 2 C=O → R 2 C=N−N=CR 2 + H 2 O. Hydrazones are intermediates in the Wolff–Kishner reduction.
N-Hydroxyphthalimide ethers, on the other hand, are colorless and provide O-alkylhydroxylamines by alkaline hydrolysis or cleavage through hydrazine hydrate. The "phthalylhydroxylamine" reported by Cohn was known to have a molecular formula of C 8 H 5 NO 3, but the exact structure was not known. [4]
Monomethylhydrazine (MMH) is a highly toxic, volatile hydrazine derivative with the chemical formula CH 6 N 2. It is used as a rocket propellant in bipropellant rocket engines because it is hypergolic with various oxidizers such as nitrogen tetroxide (N 2 O 4) and nitric acid (HNO 3). As a propellant, it is described in specification MIL-PRF ...