Estimation of Aqueous Solubility of Tri-n-Butyl Phosphate by Refractive Index Measurement at 298.15 K

Abstract

Presence of dissolved tri-n-butyl phosphate (TBP) in the aqueous nitric acid solutions, can lead to runaway reactions in presence of nitric acid at temperature more than 130^o C. Therefore, the concentration of dissolved TBP in the aqueous nitric solutions is an important control parameter for safe operation of product/waste evaporators. The experimental measurements of refractive index of six aqueous solutions of TBP in the range of 0-400 mg/L were performed and results were correlated in form of Redlich-Kister models. As an alternate to conventional chemical analysis and other instrumental techniques, a correlation, based on the experimental data, can be used to estimate the TBP content of aqueous nitric acid solutions.

Keywords: Refractive index, excess refractive index, Redlich-Kister Models, Estimation of concentration, Tri-n-butyl phosphate

Cite this ArticleSivakumar D., Kumar Shekhar and Mudali U. Kamachi. Estimation of Aqueous Solubility of Tri-n-Butyl Phosphate by Refractive Index measurement at 298.15 K.  Journal of Nuclear Engineering and Technology. 2015; 5(2): 24–27p.