PHASE-EQUILIBRIA OF METHOXYDIMETHYLOCTYLSILANE, TETRAMETHYLDIOCTYLDISILOXANE IN ORGANIC-SOLVENTS

The phase diagrams and partial solubility parameters for methoxydimeth yloctyl silane (MDOS), tetramethyl dioctyl disiloxane (TDDS), and seve ral organic components were determined. The solubility limits were est ablished by quantitative analysis and compared to the refractive index of known single phase mixtures. The partial solubility parameters wer e used to provide a qualitative analysis of the phase equilibria. The results showed the phase equilibria depended on the polarity and hydro gen bonding characteristics of the solvents. The solubility of TDDS wa s reduced with increasing polarity/hydrogen bond character of the amph iphiles solvents.