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|Section2= |Section3= |Section4= |Section7= |Section8= }} Tin(II) oxide (stannous oxide) is a compound with the formula SnO. It is composed of tin and oxygen where tin has the oxidation state of +2. There are two forms, a stable blue-black form and a metastable red form. ==Preparation and reactions== Blue-black SnO can be produced by heating the tin(II) oxide hydrate, SnO·xH2O (x<1) precipitated when a tin(II) salt is reacted with an alkali hydroxide such as NaOH.〔Egon Wiberg, Arnold Frederick Holleman (2001) ''Inorganic Chemistry'', Elsevier ISBN 0-12-352651-5〕 Metastable, red SnO can be prepared by gentle heating of the precipitate produced by the action of aqueous ammonia on a tin(II) salt.〔 SnO may be prepared as a pure substance in the laboratory, by controlled heating of tin(II) oxalate (stannous oxalate) in the absence of air or under a CO2 atmosphere. This method is also applied to the production of ferrous oxide and manganous oxide.〔Satya Prakash (2000),''Advanced Inorganic Chemistry: V. 1'', S. Chand, ISBN 81-219-0263-0〕〔Arthur Sutcliffe (1930) Practical Chemistry for Advanced Students (1949 Ed.), John Murray - London.〕 :Sn(COO)2·2H2O → SnO + CO2 + CO + 2 H2O Tin(II) oxide burns in air with a dim green flame to form SnO2.〔 :2 SnO + O2 → 2 SnO2 When heated in an inert atmosphere initially disproportionation occurs giving Sn metal and Sn3O4 which further reacts to give SnO2 and Sn metal.〔 :4SnO → Sn3O4 + Sn :Sn3O4 → 2SnO2 + Sn SnO is amphoteric, dissolving in strong acid to give tin(II) salts and in strong base to give stannites containing Sn(OH)3−.〔 It can be a dissolves in strong acid solutions to give the ionic complexes Sn(OH2)32+ and Sn(OH)(OH2)2+, and in less acid solutions to give Sn3(OH)42+.〔 Note that anhydrous stannites, e.g. K2Sn2O3, K2SnO2 are also known.〔The First Oxostannate(II): K2Sn2O3, M Braun, R. Hoppe, Angewandte Chemie International Edition in English, 17, 6, 449 - 450, 〕〔Über Oxostannate(II). III. K2Sn2O3, Rb2Sn2O3 und Cs2Sn2O3 - ein Vergleich, R. M. Braun, R. Hoppe, Zeitschrift für anorganische und allgemeine Chemie, 485, 1, 15 - 22, 〕〔 R M Braun R Hoppe Z. Naturforsch. (1982), 37B, 688-694〕 SnO is a reducing agent and this appears to its role in the manufacture of so-called "copper ruby glass".〔Colour development in copper ruby alkali silicate glasses. Part I: The impact of tin oxide, time and temperature ,Bring, T., Jonson, B., Kloo, L. Rosdahl, J , Wallenberg, R., Glass Technology, Eur. J. Glass Science & Technology, Part A, 48 , 2 , 101-108 ( 2007)〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tin(II) oxide」の詳細全文を読む スポンサード リンク
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