论文部分内容阅读
Chlorophosphonazo-mA [2-(4-Chloro-2-phosphonobenzenenazo)-7-(3-ac-etylbenzenenazo)-1,8-dihydroxynaphthalene-3,6-disulfonic acid] is a derivative of unsyr.metrical bisazo chromotropic acid,with the following structureIn 1979,it was first reported that the