Melamine is an important intermediate of pesticides, dyes, whitening agent, but also in the pharmaceutical, film, plastic, rubber, has also been reused. Because of its chemical nature is lively, so its quality is not stable. In the past, the determination of melamine by condensation of amino benzene sulfonic acid, the excess of the amino benzene sulfonic acid by sodium nitrite to titration to calculate the content of melamine. This analytical method is very rough, because it will partially hydrolyzed the melamine and the amino benzene sulfonic acid condensation, is treated as a good melamine to the inside of the.
Analysis of the Technology Co., Ltd. Tengzhou City Xiangying with anti-corrosion XiangyingGC7990plus gas chromatography, the cyanuric chloride and partial hydrolysis of cyanuric chloride separation, to avoid the disadvantages of the chemical analysis.
三聚氯氰是农药、染料、增白剂的重要中间体,而且在医药、胶卷、塑料、橡胶上也得到了重用。由于它的化学性质比较活泼,所以它的质量不稳定。以前测定三聚氯氰是用对氨基苯磺酸缩合,将多余的对氨基苯磺酸由亚硝酸钠来滴定计算三聚氯氰的含量。这个分析方法很粗糙,因为它将部分水解了的三聚氯氰与对氨基苯磺酸缩合,被当作好的三聚氯氰算到里面去了。
滕州市翔鹰分析技术有限公司采用防腐XiangyingGC7990plus气相色谱法,可将好的三聚氯氰和部分水解的三聚氯氰分离,避免了上述化学分析的缺点。
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