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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  • 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 reductase (NADH) — In enzymology, a hydroxylamine reductase (NADH) (EC number|1.7.1.10) is an enzyme that catalyzes the chemical reaction:NH3 + NAD+ + H2O ightleftharpoons hydroxylamine + NADH + H+The 3 substrates of this enzyme are NH3, NAD+, and H2O, whereas its… …   Wikipedia

  • Hydroxylamine oxidase — In enzymology, a hydroxylamine oxidase (EC number|1.7.3.4) is an enzyme that catalyzes the chemical reaction:hydroxylamine + O2 ightleftharpoons nitrite + H2OThus, the two substrates of this enzyme are hydroxylamine and O2, whereas its two… …   Wikipedia

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