Selected Physicochemical Properties of Hexamethylcyclotrisiloxane, Octamethylcyclotetrasiloxane, and Decamethylcyclopentasiloxane

Abstract

Liquid densities, viscosities, orthobaric heat capacities, surface tensions, thermal conductivities, and saturated vapor pressures were measured for samples of mole fraction purity of 99.98 % HMCTS, OMCTS, and DMCPS over wide temperature ranges, by using Anton Paar densimeter, Hoeppler viscosimeter, Perkin-Elmer DSC 1B, modified bubble method, ”hot wire” technique, and comparative ebulliometry, respectively. The experimental data were correlated and deviations or, for vapor pressure data, overall measures of data reproducibility are given.