The density dependence of the proton magnetic shielding constants in liquid methanol and ethanol has been accurately measured at a temperature of 29.2°C and at external pressures between 1 and 2500 bar. For comparison, a measurement in the vapor coexisting with the liquid at 29.2°C has also...

The density dependence of the proton magnetic shielding constant σ in methane and ethylene has been investigated experimentally using a high resolution spectrometer which operates with hydrostatic pressures between 0 and 2500 bar. At a constant temperature of 29.2°C a nonlinear dependence of...

The density dependence of J13C−H in 13CH4 has been accurately measured in a methane sample containing the natural amount of 13CH4. A linear increase of J13C−H with increasing density has been found. The total variation over a density interval from 0−575 amagat is 0.24 Hz.

The thermal conductivity of a system consisting of square-well particles has been determined by means of molecular dynamical computer simulations. The calculations were performed for a large number of points in the phase diagram, covering almost the whole fluid region. The effect of the...

Proton spin echoes at 24 MHz have been used in an accurate study of the self-diffusion coefficient in gaseous and liquid ethylene over a large range of density and temperature. The high temperature data are well described by the corrected Enskog theory. As the temperature is lowered, increasing...

The phase equilibria of the system neon-xenon have been determined up to 20 kbar. In this paper, special attention has been paid to the metastable phases and the equilibria involving a solid phase. The three-phase line fluid-fluid-solid has been studied up to its intersection with the critical...

Densities of ethylene are reported as a function of pressure in the temperature interval of 123.15 K to 223.15 K and a pressure range of 20 to 2800 bar. The experimental method based on NMR is discussed and a comparison is made with the results of other authors.

Following a description of the experimental investigation of multiple scattering of light in the critical region and of the numerical calculation of the double and triple scattering contribution in the two preceding papers, we now investigate to what extent the experimental results confirm the...

The composition of the coexisting phases of the system neon-xenon have been determined at different temperatures between the triple point and the critical point of xenon and at pressures up to 1520 bar. At 1039 bar the critical line of the system has a temperature minimum, the so-called critical...

It is shown that, as a consequence of the orientational correlations, the quantum rotational kinetic energy of interacting molecules in the orientationally disordered phase of solid methane exceeds the free rotor value. The expectation value of kinetic energy is obtained from the initial terms...