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    • 2. 发明授权
    • Aqueous solutions of sodium salts of trimercapto-s-triazine, their
preparation and use
    • 三巯基-s-三嗪的钠盐水溶液,其制备和用途
    • US5258515A
    • 1993-11-02
    • US932745
    • 1992-08-25
    • Klaus HentschelMarc SamsonMarcel VingerhoetsKarl-Ludwig Weber
    • Klaus HentschelMarc SamsonMarcel VingerhoetsKarl-Ludwig Weber
    • C07D251/38
    • C07D251/38
    • The invention relates to aqueous solutions of sodium salts of trimercapto-s-triazine whose molar saturation concentration at 0.degree. C. to 40.degree. C. is above the saturation concentration of trimercapto-s-triazine trisodium salt (TMT-Na.sub.3). More than two but less than three hydrogen atoms of the trimercapto-s-triazine are replaced by sodium ions. The solutions preferably contain trimercapto-s-triazine disodium salt (TMT-Na.sub.2) in addition to a little TMT-Na.sub.3. Surprisingly, the water solubility of TMT-Na.sub.2 is greater than that of TMT-Na.sub.3. The solutions represent a suitable supply form for the active substance trimercapto-s-triazine (TMT-H.sub.3) used in the separation of heavy metals The preparation takes place by means of reacting TMT-Na.sub.3 with TMT-H.sub.3 in a molar ratio of 1:greater than 0-less than 0.5, especially 1:0.1 to 1:
    • 本发明涉及三聚巯基三嗪的钠盐水溶液,其摩尔饱和浓度在0℃至40℃高于三巯基-s-三嗪三钠盐(TMT-Na 3)的饱和浓度。 三聚巯基-s-三嗪的多于两个但少于三个的氢原子被钠离子代替。 除了少量TMT-Na3之外,溶液优选含有三巯基-s-三嗪二钠盐(TMT-Na2)。 令人惊讶的是,TMT-Na2的水溶性大于TMT-Na3的水溶性。 该溶液代表用于分离重金属的活性物质三巯基-s-三嗪(TMT-H3)的合适供应形式。该制备通过使TMT-Na 3与TMT-H3以摩尔比1: 大于0-小于0.5,特别是在水溶液中为1:0.1至1:<0.5。