Thermodynamic studies of bronchospasm drug (Asthalin-4) in water and in binary aqueous mixtures of ethanol:solvent and temperature effect

The apparent molar volumes (Vϕ), partial molar volumes (Vϕ0)and limiting molar expansibilities, (Eϕ0) of one of the bronchospasm drugs namely Asthalin-4 have been determined in water and in binary aqueous mixtures of ethanol (w/w) from the experimentally determined densities at five temperatures T = 298.15, 303.15, 308.15, 313.15 and 318.15K. The observed data have been analysed with the help of Masson’s equation and expressed in terms of SV∗...