Journal of Chemical Thermodynamics, Vol.32, No.6, 777-788, 2000
The static dilatometric method with ultrasonic liquid level detection to determine phase diagrams and (solid plus liquid) equilibrium in (hexadecane plus octadecane)
The static dilatometric method with ultrasonic liquid level detection was used to determine the (solid + liquid) phase diagram. The method has been tested by determination of liquidus and solidus temperatures for (benzene + thiophene) and (4-bromochlorobenzene + 4-dibromobenzene) systems. The (solid + liquid) equilibrium for the system (hexadecane + octadecane) has been measured by the kinetic method of cooling and heating curves and by the static dilatometric method. The hexadecane and octadecane form solid solutions with a narrow miscibility gap in the solid phase. The metastable low-temperature solid phase has been observed over a wide range of concentrations.