5-Br-PADAT和3,5-Br_2-PADAT作为络合滴定指示剂的应用

Application of 5-(5-Bromo-2-pyridylazo)-2,4-diaminotoluene (5-Br-PADAT) and 5-(3,5-Dibromo-2-pyridylazo)-2,4-diaminotoluene(3,5-diBr-PADAT) as Metallochromic Indicators

研究了 5 [(5 溴 2 吡啶 )偶氮 ] 2 ,4 二氨基甲苯和 5 [(3,5 二溴 2 吡啶 )偶氮 ] 2 ,4 二氨基甲苯作为直接滴定铜和以铜为回滴剂的指示剂的应用 ,以及以前者为指示剂滴定铜与锌等离子总量 ,并借助掩蔽剂以提高选择性 ,成功应用于铜合金等样品的分析。

The application of 5 Br PADAT and 3,5 diBr PADAT as metallochromic indicators in the direct titration of copper, the back titration with copper as the back titrant and the direct titration of the sum of copper and zinc etc. has been thoroughly investigated. The indicators have been successfully used for the analysis of copper alloys etc.