Volumetric properties of the boldine plus alcohol mixtures at atmospheric pressure from 283.15 to 333.15 K - A new method for the determination of the density of pure boldine

Densities of boldine +alcohol binary mixtures were measured over the whole accessible range of boldine compositions at temperatures from 283.15 to 333.15 K using an Anton-Paar digital vibrating glass tube densimeter. The binary systems studied include, as a solvent, seven normal alcohols from n-C-1 to n-C-6, n-C-8, and isopropanol. The density of these systems has been found an increasing function of the boldine composition. A new methodology based on density data of solutions of solid solutes with normal alcohols is described in order to determine solid molar volume of pure solutes. This methodology was validated with pure solid naphthalene molar volumes data at 298.15 K, with an average uncertainty of 6%. (c) 2007 Elsevier B.V. All rights reserved.