Chakraborty N, Juglan KC, Kumar H. Study of Thermodynamic and Acoustic Properties of Niacin in Aqueous Hexylene Glycol and Propylene Glycol at Different Temperatures.
ACS OMEGA 2020;
5:32357-32365. [PMID:
33376872 PMCID:
PMC7758894 DOI:
10.1021/acsomega.0c04292]
[Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
The densities and speed of sound for liquid mixtures containing vitamin B3 (niacin) at 0.01, 0.03, and 0.05 mol·kg-1 concentrations in aqueous propylene glycol and hexylene glycol at the variation of temperatures from 293.15 to 308.15 K have been measured using an Anton Paar DSA 5000 M. From volumetric experimental data, apparent molar volume (V ϕ), partial molar volume (V ϕ 0), and partial molar volume of transfer (ΔV ϕ 0) are calculated along with the apparent molar isentropic compression (K ϕ, S ), partial molar isentropic compression (K ϕ, S 0), and partial molar isentropic compression of transfer (ΔK ϕ 0) using experimental acoustic data. The positive volumetric data (i.e., apparent molar volume and partial molar volume) indicates strong solute-solvent interactions inside the mixture. Along with these values, the empirical constants a, b, and c with the pair and triplet coefficients (V AB, V ABB, K AB, K ABB) are also calculated.
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