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    • 2. 发明授权
    • Method for processing β-sulphatoethylsulphonylaniline-2-sulphonic acid
    • β-硫酸亚乙基磺酰基苯胺-2-磺酸的处理方法
    • US07371892B2
    • 2008-05-13
    • US10589972
    • 2005-02-26
    • Laszlo Somogyi
    • Laszlo Somogyi
    • C07C309/00
    • C07C315/06C07C317/36
    • A process for working up β-sulfatoethylsulfonylaniline-2-sulfonic acid from a solution in aqueous sulfuric acid, comprisesa first step of the β-sulfatoethylsulfonylaniline-2-sulfonic acid being precipitated by addition of alkali or alkaline earth metal and/or ammonium salts, separated off and dissolved or the sulfuric acid being precipitated by addition of calcium salts and the resulting calcium sulfate being separated off if appropriate, anda second step of the resultant solution being adjusted to a pH between 1 and 5 by addition of alkali or alkaline earth metal or ammonium hydroxide, carbonate, bicarbonate and/or acetate, any calcium sulfate still present being separated off and the β-sulfatoethylsulfonylaniline-2-sulfonic acid being isolated from the solution.
    • 从硫酸水溶液中处理β-硫酸乙酯基磺酰苯胺-2-磺酸的方法包括通过加入碱金属或碱土金属和/或铵盐来沉淀β-硫酸乙基磺酰基苯胺-2-磺酸的第一步骤 ,分离并溶解,或通过加入钙盐沉淀硫酸,如果合适的话将所得的硫酸钙分离出来,第二步通过添加碱或碱将所得溶液的pH调节至1至5。 碱土金属或氢氧化铵,碳酸盐,碳酸氢盐和/或乙酸盐,分离出仍然存在的任何硫酸钙,并从溶液中分离出β-硫酸乙基磺酰基苯胺-2-磺酸。
    • 6. 发明申请
    • Method for processing beta-sulphatoethylsulphonylaniline-2-sulphonic acid
    • β-硫酸亚乙基磺酰基苯胺-2-磺酸的处理方法
    • US20070173661A1
    • 2007-07-26
    • US10589972
    • 2005-02-26
    • Laszlo Somogyi
    • Laszlo Somogyi
    • C07C309/01
    • C07C315/06C07C317/36
    • A process for working up β-sulfatoethylsulfonylaniline-2-sulfonic acid from a solution in aqueous sulfuric acid, comprises a first step of the β-sulfatoethylsulfonylaniline-2-sulfonic acid being precipitated by addition of alkali or alkaline earth metal and/or ammonium salts, separated off and dissolved or the sulfuric acid being precipitated by addition of calcium salts and the resulting calcium sulfate being separated off if appropriate, and a second step of the resultant solution being adjusted to a pH between 1 and 5 by addition of alkali or alkaline earth metal or ammonium hydroxide, carbonate, bicarbonate and/or acetate, any calcium sulfate still present being separated off and the β-sulfatoethylsulfonylaniline-2-sulfonic acid being isolated from the solution.
    • 从硫酸水溶液中处理β-硫酸乙酯基磺酰苯胺-2-磺酸的方法包括通过加入碱金属或碱土金属和/或铵盐来沉淀β-硫酸乙基磺酰基苯胺-2-磺酸的第一步骤 ,分离并溶解,或通过加入钙盐沉淀硫酸,如果合适的话将所得的硫酸钙分离出来,第二步通过添加碱或碱将所得溶液的pH调节至1至5。 碱土金属或氢氧化铵,碳酸盐,碳酸氢盐和/或乙酸盐,分离出仍然存在的任何硫酸钙,并从溶液中分离出β-硫酸乙基磺酰基苯胺-2-磺酸。