Synthesis and Spectrophotometric Studies of 2-(2-Imidazolylazo)-5-Dicthylamino Phenol

查看全文 作　　者：Fu You PAN;Chang Hua GE;Hua Ding LIANG(Department of Chemistry, Taichou Teachers College, Zhejiang 317000) 出　　处：《Chinese Chemical Letters》索引1999年第10卷第11期,共4页 摘　　要：In this paper, 2-(2-imidazolylazo)-5-diethylami phenol (IZAPN) was prepared, theprotonation behaviour and the condition of spectrophotometric determination of cobalt with thisreagent are reported. The results show that the new colour reagent reacts with cobalt to from astable purple red complex (l:3). However, the complex formed could be changed into anotherspecies with stable absorptivity by addition of mineral acid (1+1). The, method is highly selectiveand sensitive and has been applied to the direct determination of cobalt in some alloys withsatisfactory results. 关 键 词：SYNTHESIS imidazolylazo SPECTROPHOTOMETRY cobalt.