Abstract
In this work, densities of two binary systems of {alkanol (ethanol and 1-propanol)+boldine} are measured at temperatures from (313 to 363)K and pressures up to 20MPa using an Anton Paar vibrating tube densimeter. Each (alkanol+boldine) system was prepared at five diluted compositions with respect to the alkaloid. These are (x2=0.0012, 0.0074, 0.0136, 0.0196, 0.0267) and (x2=0.0018, 0.0046, 0.0077, 0.0112, 0.0142) mixed in ethanol and 1-propanol, respectively. Experimental densities are correlated using an empirical 6-parameter equation with deviations within 0.04%. Extrapolated densities at atmospheric pressure agree with the literature data. Isobaric expansivity, isothermal compressibility, thermal pressure coefficient, and internal pressure have been calculated.
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