新试剂2-(2-氰基-4-硝基-6-溴苯偶氮)-6-异丙基苯酚的合成及金属离子显色反应

Studies on the Sythesis of 2 (2 Cyano 4 Nitro 6 Bromobenzeneazo) 6 Isopropylphenol and Its Color Reaction with Metallic Ions

本文以２－氰基－４－硝基－６－溴苯胺为原料，经重氮化后与邻异丙基苯酚偶联，合成２－（２－氰基－４－硝基－６－溴苯偶氮）－６－异丙基苯酚，用乙醇重结晶精制。用元素分析，波谱等鉴定其结构，并测定其离解常数，研究该试剂的一般性质。发现其与Ｃｕ２＋、Ｎｉ２＋、Ｃｏ２＋等的显色反应在吐温８０表面活性剂存在下有较高的灵敏度。

2 (2 cyano 4 nitro 6 bromobenzeneazo) 6 isopropylphenol has been synthesized by coupling reaction of 2 cyano 6 bromo 4 nitroaniline with o isopropyl phenol.Its structure was confirmed by elemental analysis and spectral data.The dissociation constant was determined and its color reaction with metallic ions was studied.