hydroxylamine


hydroxylamine
/huy drok'seuh leuh meen", -seuhl am"in/, n.
an unstable, weakly basic, crystalline compound, NH3O, used as a reducing agent, analytical reagent, and chemical intermediate.
[1865-70; HYDROXYL + -AMINE]

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      (NH2OH), an oxygenated derivative of ammonia, used in the synthesis of oximes from aldehydes and ketones. Oximes are reduced easily to amines, which are used in the manufacture of dyes, plastics, synthetic fibres, and medicinals; the oxime of cyclohexanone can be converted to its isomer epsilon-caprolactam, from which nylon-6 is made. Hydroxylamine and its inorganic salts are powerful reducing agents used in the preparation of polymers and as constituents of photographic developers.

      Hydroxylamine may be prepared by several methods; of current technical importance are the hydrolysis of nitroalkanes (RCH2NO2) and the catalytic hydrogenation of nitric oxide (NO).

      Pure hydroxylamine is a colourless, crystalline solid (melting point 33.05° C [91.49° F]). An unstable compound, decomposing to nitric oxide and hydrogen, it is usually handled in the form of salts.

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Universalium. 2010.

Look at other dictionaries:

  • Hydroxylamine — Hydroxylamine …   Wikipedia

  • hydroxylamine — [ idrɔksilamin ] n. f. • 1873; de hydroxyle et amine ♦ Chim. Base dérivée de l ammoniac (NH2OH). ● hydroxylamine nom féminin Dérivé hydroxylé de l ammoniac, de formule HO―NH2. (Solide fondant à 33 °C, très soluble dans l eau, l hydroxylamine n… …   Encyclopédie Universelle

  • Hydroxylamine — Hy*drox yl*am ine, n. [Hydroxyl + amine.] (Chem.) A nitrogenous, organic base, {NH2.OH}, resembling ammonia, and produced by a modified reduction of nitric acid. It is usually obtained as a volatile, unstable solution in water. It acts as a… …   The Collaborative International Dictionary of English

  • hydroxylamine — hydroxylamine. См. гидроксиламин. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • hydroxylamine — [hī dräks΄il ə mēn′, hī dräks΄ilam′ēn΄; hī dräks΄il am′in] n. [ HYDROXYL + AMINE] a colorless crystalline base, NH2OH, used as a reducing agent …   English World dictionary

  • Hydroxylamine — Les hydroxylamines sont les composés dont la formule est NR1R2 OH elles dérivent de l hydroxylamine de formule NH2OH.Les hydroxylamines sont aussi des outils chimique utile pour des coupures spécifique de peptides , ils rompent la liaison entre… …   Wikipédia en Français

  • hydroxylamine- — hidroksilamin statusas T sritis chemija apibrėžtis Ligandas. formulė NH₂OH atitikmenys: angl. hydroxylamine rus. гидроксиламин ryšiai: sinonimas – hidroksazan …   Chemijos terminų aiškinamasis žodynas

  • hydroxylamine — hidroksilaminas statusas T sritis chemija formulė NH₂OH atitikmenys: angl. hydroxylamine rus. гидроксиламин ryšiai: sinonimas – hidroksazanas …   Chemijos terminų aiškinamasis žodynas

  • hydroxylamine — noun Etymology: International Scientific Vocabulary Date: 1869 a colorless odorless nitrogenous base NH3O that resembles ammonia in its reactions but is less basic and that is used especially as a reducing agent …   New Collegiate Dictionary

  • hydroxylamine — noun a) An explosive inorganic derivative of ammonia, NHOH, used as a reducing agent, and in organic synthesis. b) Any organic …   Wiktionary


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