hydrazine
enUKhy·dra·zine
H0342500 (hī′drə-zēn′, -zĭn)hydrazine
(ˈhaɪdrəˌziːn; -zɪn)hy•dra•zine
(ˈhaɪ drəˌzin)n.
Noun | 1. | hydrazine - a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels |
单词 | hydrazine | |||
释义 | hydrazineenUKhy·dra·zineH0342500 (hī′drə-zēn′, -zĭn)hydrazine(ˈhaɪdrəˌziːn; -zɪn)hy•dra•zine(ˈhaɪ drəˌzin)n.
hydrazineenUKhydrazine(hī`drəzēn'), chemical compound, formula NH2NH2, m.p. 1.4°C;, b.p. 113.5°C;, specific gravity 1.011 at 15°C;. It is very soluble in water and soluble in alcohol. At ordinary temperatures it is a colorless, fuming liquid that has an ammonialike odor, but when frozen it forms white crystals. Hydrazine is corrosive and a strong reducing agent, but it is a weaker base than ammoniaammonia,chemical compound, NH3, colorless gas that is about one half as dense as air at ordinary temperatures and pressures. It has a characteristic pungent, penetrating odor. ..... Click the link for more information. . It reacts with water to form hydrazine hydrate, N2H4·H2O, a colorless liquid that boils at 120°C;. Hydrazine can be prepared (usually as the hydrate) by reacting ammonia with chloramine, NH2Cl, in the presence of glue or gelatin. The glue or gelatin inhibits decomposition of the hydrazine. Ammonium chloride is a byproduct. The chloramine may be prepared by reacting ammonia with a hypochlorite or chlorine gas. Hydrazine is also prepared by reaction of sodium hypochlorite with urea in the presence of glue or gelatin. Hydrazine is dibasic and forms many salts, e.g., mono- and di-hydrochlorides, mono- and di-nitrates, and two sulfates. The major use of hydrazine is as a rocket fuel because it burns rapidly, producing a large amount of heat. Hydrazine and its derivatives are also used in the manufacture of algicides, fungicides, insecticides, and agricultural chemicals; in rubber curing and the manufacture of foam rubber and plastics; in soldering fluxes; and as a corrosion inhibitor in boiler feedwater. Isoniazidisoniazid , drug used to treat tuberculosis. Also known as isonicotinic acid hydrazide, isoniazid is the most effective antituberculosis drug currently available. The drug inhibits or kills the tubercle bacilli that cause the disease. ..... Click the link for more information. , a drug used in treatment of tuberculosis, is isonicotinic hydrazide. Hydrazine(also called diamide), H2N—NH2, a colorless, hygroscopic liquid that fumes in air. Boiling point, 113.5° C; melting point, 2° C; density, 1,008 g/cm3 (at 20° C). Hydrazine is absolutely soluble in water and low alcohols. It is insoluble in hydrocarbons and other organic solvents. Aqueous solutions of hydrazine are basic (K Hydrazine is an endothermal compound; heat of formation ΔH REFERENCEAudrieth, L., and B. Ogg. Khimiia gidrazina. Moscow, 1954. (Translated from English.)V. S. LAPIK hydrazine[′hī·drə‚zēn]hydrazineenUKhydrazine[hi´drah-zēn]hy·dra·zine(hī'dră-zēn),hydrazineenUK
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