Thermal stability of silica-polyvinylsiloxane systems with different ratio of hydrophilic and hydrophobic components and its
forms with adsorbed dyes were studied using thermochemical method. It was shown that the maximum of endoeffect relating to
dehydroxylation of sorbents surface is observed at 325C. The maximum temperature of the second endoeffect depends on the
organosilica sorbents composition and increases with a decrease of hydrophilic and hydrophobic sites ratio. It was found that
the values of the summary thermal effect lowers upon the raise of the quantity of silanol groups. It was shown that thermal
stability of composition materials is higher in comparison with initial organosilica sorbents.