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研究了2—(4′—羟苯基)—硝基乙烯新试剂的光度特性,测定了它的离解常数和变色范围。将其用作定量分析的指示剂。获得了很好的精密度和较高的准确度。
The photometric properties of 2- (4’-hydroxyphenyl) -nitroethylene was studied. Its dissociation constant and discoloration range were determined. It is used as an indicator of quantitative analysis. Get good precision and high accuracy.