2000•Journal of Hebei UniversityRequires access

Properties of the Isochromatic Dye IonPairs Formed by Bromophenol Blue and Butylrhodamine B

Liang Shu-xuan

Abstract

The properties of bromophenol(BPB) and butylrhodamine(BRB) and the isochromatic dye ionpairs formed by BPB and BRB were studied. The experiment showed that the proportion of BPB∶BRB was 1∶3 at pH 7, K sp =2.66×10 -23 and the extraction rate was 94.9%. The absorption was proportional to BPB concentration over the range of 0～6×10 -6 mol/L. It is the foundation of application of BPB and BRB in extraction spectrophotometry.

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Key concepts: Bromophenol blue, Extraction (chemistry), Chemistry, Spectrophotometry, Absorption (acoustics), Nuclear chemistry, Chromatography, Materials science