Density, Refractive Index, and Sound Velocity for the Binary Mixtures of Tri-n-Butyl Phosphate and n-Butanol between 303.15 K and 323.15 K

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• 作者：M. Nur Hossain ; M. Mehedi Hasan Rocky ; Shamim Akhtar
• 刊名：Journal of Chemical & Engineering Data
• 出版年：2016
• 出版时间：January 14, 2016
• 年：2016
• 卷：61
• 期：1
• 页码：124-131
• 全文大小：361K
• ISSN：1520-5134

文摘

Density, ρ, refractive index, n_D, and sound velocity, u, have been measured for pure TBP, n-BuOH, and their binary mixtures in the range, 0 ≤ x₂ ≤ 1, between (303.15 and 323.15) K at an interval of 5 K. From measured ρ and n_D, excess molar volumes, V_m^E, thermal expansivity, α, excess thermal expansivity, α^E, and deviation in refractive index, Δn_D, were calculated. Furthermore, using ρ and u, some derived properties, such as acoustic impedance, z, isentropic compressibility, κ_s, and their deviations (Δu, Δz, and Δκ_s), were also calculated. Values of ρ, n_D, u, z, and κ_s were found to correlate with concentration dependent polynomials, whereas the deviations/excess properties were fitted well to Redlich–Kister equations. The variation patterns of the studied properties were discussed with reference to the nature of molecular interactions taking place between the liquids of TBP and n-BuOH.