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Τι (ποιος) είναι hydrazine - ορισμός

CHEMICAL COMPOUND

Urea process for hydrazine production; N2H4; Urea Process; Hydrazin; Dinitrogen tetrahydride; Hydrazene; Hydrazine fuel; Anhydrous hydrazine; Hydrazine dihydrochloride; Diazane; H4N2; Urea process; NH2NH2; Hydrazine Hydrate; Hydrazinium chloride; Hydrazine hydrate; Hydrozene; Diamidogen; Diamide hydrate

hydrazine

['h??dr?zi:n]

¦ noun Chemistry a volatile alkaline liquid with powerful reducing properties, used in some rocket fuels. [N₂H₄.]

Origin

C19: from hydrogen + azo- + -ine⁴.

Hydrazine

·noun Any one of a series of nitrogenous bases, resembling the amines and produced by the reduction of certain nitroso and diazo compounds; as, methyl hydrazine, phenyl hydrazine, ·etc. They are derivatives of hydrazine proper, H₂N·NH₂, which is a doubled amido group, recently (1887) isolated as a stable, colorless gas, with a peculiar, irritating odor. As a base it forms distinct salts. Called also diamide, amidogen, (or more properly diamidogen), ·etc.

Hydrazine oxidoreductase

ENZYME CLASS

EC 1.7.99.8; Hydrazine:acceptor oxidoreductase

Hydrazine oxidoreductase (, HAO (ambiguous)) is an enzyme with systematic name hydrazine:acceptor oxidoreductase. This enzyme catalyses the following chemical reaction

https://en.wikipedia.org/wiki/Hydrazine_oxidoreductase

Βικιπαίδεια

Hydrazine

Hydrazine is an inorganic compound with the chemical formula N₂H₄. It is a simple pnictogen hydride, and is a colourless flammable liquid with an ammonia-like odour. Hydrazine is highly toxic unless handled in solution as, for example, hydrazine hydrate (N₂H₄·xH₂O).

Hydrazine is mainly used as a foaming agent in preparing polymer foams, but applications also include its uses as a precursor to polymerization catalysts, pharmaceuticals, and agrochemicals, as well as a long-term storable propellant for in-space spacecraft propulsion. Additionally, hydrazine is used in various rocket fuels and to prepare the gas precursors used in air bags. Hydrazine is used within both nuclear and conventional electrical power plant steam cycles as an oxygen scavenger to control concentrations of dissolved oxygen in an effort to reduce corrosion. As of 2000, approximately 120,000 tons of hydrazine hydrate (corresponding to a 64% solution of hydrazine in water by weight) were manufactured worldwide per year.

Hydrazines refer to a class of organic substances derived by replacing one or more hydrogen atoms in hydrazine by an organic group.

https://en.wikipedia.org/wiki/Hydrazine

Παραδείγματα από το σώμα κειμένου για hydrazine

1. "We have a fireball . . . We have a vapor cloud –– that would likely be the hydrazine . . . We have some spectral analysis showing hydrazine, that it vented," Cartwright said.

2. Hydrazine is similar to chlorine or ammonia in that it affects the lungs and breathing tissue.

3. "We don‘t have enough information to say whether the leak is hydrazine or nitrogen," Shannon said.

4. They contain the toxic rocket fuel hydrazine, which can harm anyone who comes into contact with it.

5. Phoenix used another fuel, hydrazine, to power its thrusters and land on the red planet on May 25.