Wacker Chemie AG



SILRES® BS 16 is an aqueous solution of potassium methyl siliconate and
is used in diluted form for the impregnation of mineral construction materials to make them water-repellent.
SILRES® BS 16 develops its water-repellent properties by reaction with
atmospheric carbon dioxide (CO2). The active substance formed from the silicone masonry water repellent is polymethylsilicic acid.
As with all siliconates, however, SILRES® BS 16 can cause a white
deposit on the surface of colored construction materials, or if used outside the application guidelines.
Typical general characteristics
Property Inspection Method Value
The figures are intended as a guide and should not be used in preparing specifications.
Density at 25 °C 1013 hPa 1.4 g/cm³
Solids content 55 %
Active substance approx. 34 wt. %
K2O equivalent approx. 20 wt. %
pH at 25 °C Indicator strips 13 - 14

All the information provided is in accordance with the present state of our knowledge. Nonetheless, we disclaim any warranty or liability whatsoever and reserve the right, at any time, to effect technical alterations. The information provided, as well as the product’s fitness for an intended application, should be checked by the buyer in preliminary trials. Contractual terms and conditions always take precedence.

This disclaimer of warranty and liability also applies – particularly in foreign countries – with respect to third parties’ rights.


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