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diamide 肼; 肼; 二酰氨; 二酰胺 □; □; 二□氨; 二□胺 Hydrazine \Hy"dra*zine\, n. [Hydr- azo- -ine.] (Chem.)
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. [1913 Webster] Diamide \Di*am"ide\ (?; 104), n. [Pref. di- amide.] (Chem.) Any compound containing two amido groups united with one or more acid or negative radicals, -- as distinguished from a diamine. Cf. Amido acid, under {Amido}, and Acid amide, under {Amide}. [1913 Webster]
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