摘要
Density （ρ） and viscosity （η） measurements were carried out for 4-aminobutyric acid in 0.0041,0.0125 and 0.0207 mol·L-1 aqueous salbutamol sulphate at T=308.15,313.15 and 318.15K.The measured values of density and viscosity were used to estimate some important parameters such as apparent molar volume Vφ,limiting apparent molar volume Vφ0,transfer volume △Vφ0,hydration number Hn,second derivative of infinite dilution of partial molar volume with temperature 2Vφ0/T2,viscosity B-coefficients,variation of B with temperature dB/dT,free energy of activation per mole of solvent △μ10＊ and solute △μ20＊,activation entropy △S20＊ and activation enthalpy △H20＊ of the amino acids.These parameters have been interpreted in terms of solute-solute and solute-solvent interactions and structure making/breaking ability of solutes in the given solution.
密度(ρ；) 并且粘性(η；) 大小在 0.0041， 0.0125 和 0.0207 mol· 为 4-aminobutyric 酸被执行； L <sup>−1</sup> 在 308.15， 313.15 和 318.15 K 的水的 salbutamol 硫酸盐。密度和粘性的测量的值被用来估计象明显的臼齿的卷 V 那样的一些重要参数，限制明显的臼齿的体积，转移体积，水和数字 n <sub >有温度的部分臼齿的体积的无限的冲淡导出的 H </sub>,秒，粘性B系数，有温度 dB/dT 的 B 的变化，激活的免费精力每溶剂和溶质的鼹鼠，氨基酸的激活熵和激活热含量。这些参数在给定的答案以溶质溶质和溶质溶剂相互作用和溶质的结构做 / 打破能力被解释了。
