Abstract:

Hexane-HMDS（hexamethyl disilazane）, MM(hexamethyl disiloxane)-HMDS and hexane-MM binary systems isobaric（101.30 kPa）vapor-liquid equilibrium (VLE) data were measured with a modified Rose still.The saturated vapor pressures of HMDS and hexane at experimental temperatures were measured with the static method, and the Antoine parameters of HMDS were regressed.The experimental data were tested with the area test method and the VLE data were shown to meet thermodynamic consistency.Margules, van Laar, Wilson and NRTL models were used to correlate the experimental data.The results showed that the system of hexane-MM had higher average relative deviations, and the calculated data from four models agreed well with the experimental data of hexane-HMDS and MM-HMDS systems.