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Temperature dependence of apparent molar volumes and viscosity B-coefficients of amino acids in aqueous potassium thiocyanate solutions from 15 to 35°C

Abstract

Precise density ρ and viscosity η data at 15, 25 and 35°C for solutions of glycine, DL-alanine, L-threonine, β-alanine, γ-aminobutyric acid and ε-aminocaproic acid in water and in (1m, 3m, 5m) aqueous potassium thiocyanate were measured and the limiting apparent molar volumes V ϕ o and the B-coefficients calculated. The V κ o and B values were split into the contributions from the NH 3 + ,COO and CH2 groups. These data are rationalized on the basis of hydrophillic and hydrophobic interactions between the various groups present in these solutions.

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Abstracted from the Ph.D Thesis of R. K. Goyal, University of Delhi, 1990.

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Wadi, R.K., Goyal, R.K. Temperature dependence of apparent molar volumes and viscosity B-coefficients of amino acids in aqueous potassium thiocyanate solutions from 15 to 35°C. J Solution Chem 21, 163–170 (1992). https://doi.org/10.1007/BF00647005

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Key Words

  • Apparent molar volume
  • viscosityB-coefficient
  • amino acids
  • potassium thiocyanate
  • temperature dependence