Determination of the Mean Relative Molecular Mass of Asphaltenes and Malthenes from Coal and Crude Oil by Osmometry in the Vapor Phase

摘要

The use of osmometry in the vapor phase for the determination of the mean relative molecular mass of bituminous substances is discussed. It is useful to extrapolate data to infinite dilution for a larger number of concentrations of the sample at several temperatures. The aggregation state in various solvents cannot be related only to a specific simple property of the solvent. (ERA citation 07:045723)