Eco-Relevant Properties of Selected Organosilicon Materials

This chapter summarizes the estimation/measurement techniques and data available for several physico-chemical properties of selected organosilicon materials. A deliberate emphasis is placed on equilibrium partition coefficients, because of their widespread use in performing environmental calculations. Physico-chemical properties are listed in tabular form, along with conventional properties (density, vapor pressure, etc.), equilibrium partition coefficients (such as log Kow), and eco-relevant properties (like Henry’s law constant). The focus will center on: linear siloxanes with structure Me3SiO[SiMe2O]n SiMe3 where n = 0 to 6 cyclic siloxanes with structure [Me2SiO]x where x = 3 to 8 a number of silanols, classified separately from siloxanes Limitations of the estimation and experimental methods are also discussed. Where applicable, comparison has been provided between the selected organosilicon compounds and other organic compounds.