85638-82-0Relevant academic research and scientific papers
5-METHYL-1,3,4-THIADIAZOLYL-(2-AZO-6)-3,4-DIMETHYLPHENOL AS NEW ANALYTICAL REAGENT
Cacho, Juan,Nerin, Cristina,Ruberte, Laura
, p. 471 - 476 (2007/10/02)
A synthesis of the new reagent 5-methyl-1,3,4-thiadiazolyl-(2-azo-6)-3,4-dimethylphenol (MTDADF) is described.The dissociation constant of the OH group is determined by spectrophotometry (pKa = 7.88 +/- 0.05).The reaction of MTDADF with Ni(II) is quantitatively studied.Beer's law is obeyed in the interval of 0-2.4 ppm of Ni(II), the optimum range being 0.4 to 2.0 ppm, as deduced from a Ringboom graph.The stoichiometry of the complex corresponds to the ML2 type.Many other ions interfere seriously in the determination of Ni(II).
