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Volumetric and Viscometric Studies of Amino Acids in Vitamin B6 Aqueous Solutions at Various Temperatures

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School of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Engineering, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
Cite this: J. Chem. Eng. Data 2015, 60, 5, 1279–1290
Publication Date (Web):April 9, 2015
https://doi.org/10.1021/je500975a
Copyright © 2015 American Chemical Society

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    Abstract

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    The densities and viscosities of glycine, l-alanine, l-valine, l-threonine, and l-arginine in (0.1 to 0.4) mol·kg–1 vitamin B6 aqueous solutions were measured and studied over the entire molality range at (293.15, 303.15, 313.15, and 323.15) K and atmospheric pressure. The apparent molar volume (Vϕ), limiting partial molar volume (Vϕ0), and limiting partial molar volume of transfer (ΔtrVϕ0) were obtained according to the experimental density data. The viscosity data were employed to determine the viscosity B coefficients, the free energies of activation per mole of solvent (Δμ10⇌) and solute (Δμ20⇌). The influences of temperature, molality, and solute structure on these parameters were discussed in terms of molecular interactions. The contributions of the charged end group (NH3+, COO) and CH2 group to the limiting partial molar volumes and viscosity B coefficients were obtained through their linear correlation as a function of the number of carbon atoms in the alkyl chains of the studied amino acids.

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    Comparison between experimental densities and viscosities of vitamin B6 and the literature values. This material is available free of charge via the Internet at http://pubs.acs.org.

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    2. Mousmee Sharma, Tarlok S. Banipal, Parampaul K. Banipal. Molecular Interactions of Saccharides and Their Derivatives with Thiamine HCl and Pyridoxine HCl Vitamins in Aqueous Solutions: Calorimetric, Viscometric, and NMR Spectroscopic Studies. Journal of Chemical & Engineering Data 2018, 63 (5) , 1325-1351. https://doi.org/10.1021/acs.jced.7b00937
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    8. Evgeniy V. Ivanov, Elena Yu. Lebedeva. Effect of temperature on volumetric behavior of glycine in aqueous mebicar ( N -tetramethylglycoluril) at p ~ 0.1 MPa. Journal of Molecular Liquids 2017, 242 , 235-243. https://doi.org/10.1016/j.molliq.2017.07.015
    9. Abhijit Sarkar, Bijan Kumar Pandit, Biswajit Sinha. Volumetric and viscometric behaviour of pyridoxine hydrochloride in aqueous tetrabutylammonium hydrogen sulphate solutions at different temperatures. The Journal of Chemical Thermodynamics 2016, 103 , 36-43. https://doi.org/10.1016/j.jct.2016.08.004
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