报道新显色剂2—(4,5—二甲基—2—噻唑偶氮)—5—二甲氨基酚(简称DMTAM)的合成方法和结构鉴定结果。对其溶解性,在可见光区的吸收性以及与常见金属离子的显色性能进行了试验。结果表明:DMTAM易溶于多种有机溶剂且能被各类表面活性剂增溶,DMTAM具有良好的金属生色性,与Cu~(2+)、CO~(2+)、Ni~(2+)、pd~(2+)、Zn~(2+)、Bi~(3+)等形成灵敏稳定的配合物,可用作金属指示剂和光度分析显色剂。 Reported the new color reagent 2- (4,5-dimethyl-2-thiazolylazo) -5-dimethylaminophenol (referred to as DMTAM) synthesis method and structure identification results. Its solubility, absorption in the visible region and the color development of common metal ions were tested. The results showed that DMTAM was soluble in many kinds of organic solvents and solubilized by various surfactants. DMTAM had good metallicity, +), Pd ~ (2 +), Zn ~ (2 +), Bi ~ (3 +) and so on, which can be used as metal indicator and photometric analysis reagent.