Ultrasonic Studies of 4-Aminobutyric Acid in Aqueous Salbutamol Sulphate Solutions at Different Temperatures

Abstract

Abstract: Ultrasonic speeds of 4-aminobutyric acid in 0.0041,0.0125 and 0.0207 mol·kg^-1 aqueous salbutamol sulphate (SBS) solutions are measured at 308.15,313.15 and 318.15 K.Isentropic compressibility kS,change in isentropic compressibility △k S,relative change in isentropic compressibility (△k_s/k_s⁰),apparent molal compressibility k_φ,limiting apparent molal compressibility k_φ⁰ ,transfer limiting apparent molal compressibility k_φ⁰,hydration number nH,pair and triplet interaction parameters kAS,kASS are estimated.The above parameters are used to interpret the solute-solute and solute-solvent interactions of 4-aminobutyric acid in the aqueous salbutamol sulphate solutions.

Key words: ultrasonic speed, isentropic compressibility, limiting apparent molal compressibility, hydration number, salbutamol sulphate

摘要： Ultrasonic speeds of 4-aminobutyric acid in 0.0041,0.0125 and 0.0207 mol·kg^-1 aqueous salbutamol sulphate (SBS) solutions are measured at 308.15,313.15 and 318.15 K.Isentropic compressibility kS,change in isentropic compressibility △k S,relative change in isentropic compressibility (△k_s/k_s⁰),apparent molal compressibility k_φ,limiting apparent molal compressibility k_φ⁰ ,transfer limiting apparent molal compressibility k_φ⁰,hydration number nH,pair and triplet interaction parameters kAS,kASS are estimated.The above parameters are used to interpret the solute-solute and solute-solvent interactions of 4-aminobutyric acid in the aqueous salbutamol sulphate solutions.

关键词: ultrasonic speed, isentropic compressibility, limiting apparent molal compressibility, hydration number, salbutamol sulphate

K. Rajagopal, S. S. Jayabalakrishnan. Ultrasonic Studies of 4-Aminobutyric Acid in Aqueous Salbutamol Sulphate Solutions at Different Temperatures[J]. , 2010, 18(4): 659-666.

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