Orthobaric data of certain pure liquids in the neighborhood of the critical point

Abstract

The orthobaric densities of liquid and vapor, and the vapor pressure, have been determined for the three pure liquids, acetone, chloroform, and benzene. It is shown that the nose of the curve, representing orthobaric densities (or volumes) as a function of temperature, though very flat, is probably not a horizontal straight line. Nevertheless, critical phenomena can be observed over a range of total volume, at the critical temperature.