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    • 36. 发明公开
    • VERFAHREN ZUR AUFARBEITUNG VON BETA-SULFATOETHYLSULFONYLANILIN -2-SULFONSAURE
    • VERFAHREN ZUR AUFARBEITUNG VON BETA-SULFATOETHYLSULFONYLANILIN-2-SULFONSAURE
    • EP1723103A1
    • 2006-11-22
    • EP05733648.9
    • 2005-02-26
    • BASF Aktiengesellschaft
    • SOMOGYI, Laszlo
    • C07C315/06C07C317/36
    • C07C315/06C07C317/36
    • The invention relates to a method for processing ß-sulphatoethylsulphonylaniline-2-sulphonic acid which is present as a solution in an aqueous sulphuric acid. In a first step, the ß-sulphatoethylsulphonylaniline-2-sulphonic acid is precipitated, separated and dissolved in water by adding (earth)alkali and/or ammonium salts, or the sulphuric acid is precipitated by adding calcium salts, the calcium sulphate thus arising is optionally separated, and in a second step, the solution thus arising is adjusted to a pH value of between 1 and 5 by adding (earth)alkali or ammonium hydroxide, carbonate, hydrogen carbonate and/or acetate, the existing calcium sulphate is separated, and the ß-sulphatoethylsulphonylaniline-2-sulphonic acid is isolated from the solution and the thus produced ß-sulphatoethylsulphonylaniline-2-sulphonic acid.
    • 本发明涉及一种处理在硫酸水溶液中存在的β-硫酸根合乙磺酰基苯胺-2-磺酸的方法。 在第一步中,通过加入(土)碱和/或铵盐将β-磺酸基乙磺基苯胺-2-磺酸沉淀,分离并溶于水中,或者通过加入钙盐使硫酸沉淀,由此产生硫酸钙 任选分离,并且在第二步中,通过添加(土)碱或氢氧化铵,碳酸盐,碳酸氢盐和/或乙酸盐将由此产生的溶液调节至1至5之间的pH值,将现有的硫酸钙分离 从溶液中分离出β-磺基乙基磺酰基苯胺-2-磺酸并由此生成β-磺基乙基磺酰基苯胺-2-磺酸。