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|Section2= |Section7= |Section8= }} Sulfamic acid, also known as amidosulfonic acid, amidosulfuric acid, aminosulfonic acid, and sulfamidic acid, is a molecular compound with the formula H3NSO3. This colorless, water-soluble compound finds many applications. Sulfamic acid melts at 205 °C before decomposing at higher temperatures to H2O, SO3, SO2, and N2. Sulfamic acid (H3NSO3) may be considered an intermediate compound between sulfuric acid (H2SO4), and sulfamide (H4N2SO2), effectively - though see below - replacing an -OH group with an -NH2 group at each step. This pattern can extend no further in either direction without breaking down the -SO2 group. Sulfamates are derivatives of sulfamic acid. ==Production== Sulfamic acid is produced industrially by treating urea with a mixture of sulfur trioxide and sulfuric acid (or oleum). The conversion is conducted in two stages: :OC(NH2)2 + SO3 → OC(NH2)(NHSO3H) :OC(NH2)(NHSO3H) + H2SO4 → CO2 + 2 H3NSO3 In this way, approximately 96,000 tons were produced in 1995.〔A. Metzger "Sulfamic Acid" in Ullmann's Encyclopedia of Industrial Chemistry, 2012, Wily-VCH, Weinheim. 〕 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「Sulfamic acid」の詳細全文を読む スポンサード リンク
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