Background: The present work deals with the study of acoustic parameters i.e. ultrasonic velocity, density, adiabatic compressibility (β s ), apparent molar compressibility (ϕ k ) and specific acoustic impedance (Z) which reflects structural interaction by interferometer by 3-acetyl-4-methyl-6-chloro-8-nitrocoumarin at different percentage of 1-propanol-water and 2-propanol-water solvent system at 300K, 303K and 307K are studied. Methods: In present investigation, ultrasonic velocity and density of 3-acetyl-4-methyl-6-chloro-8-nitrocoumarin have been studied at 0.01 M concentration at different concentrations (70%, 75%, 80%, 85% and 90%) in 100% 1-propanol and 2-propanol at 300K, 303K and 307K. From these values, adiabatic compressibility (β s ), apparent molar compressibility (ϕ k ) and specific acoustic impedance (Z) are calculated.
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