The ability of some siliconates to hydrophobize and modify the surface of different kinds of asbestos was studied. A 6 wt%
aqueous solution of potassium methylsiliconate was used in various quantities. After treatment, the asbestos samples were
analysed by IR-spectroscopy, TG-DTA and electron microscopy. Structural changes were found on the asbestos surface, including
the appearance of chemical bonds. The studies revealed that the sorption and lyophilic properties of asbestos are lowered,
these being the basic preconditions for its injurious action on health.