Wacker Silres® BS 16 Silicone Masonry Water Repellent

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Wacker Silres® BS 16 Silicone Masonry Water Repellent
Categories:	Polymer; Thermoset; Silicone
Material Notes:	Product description: 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. Application: Imparting water repellency to: low-fired clay products immediately after they have been made: e. g. roof tiles, facing bricks, floor tiles, flower pots aerated concrete gypsum and gypsum-based fiber boards light fillers, such as perlite, vermiculites and aerated concrete granules insulating materials Information provided by Wacker Chemie AG.
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Physical Properties	Metric	English	Comments

Density	1.40 g/cc @Pressure 0.1013 MPa	0.0506 lb/in³ @Pressure 14.69 psi
Solids Content	54 % @Treatment Temp. 150 °C, Time 3600 sec	54 % @Treatment Temp. 302 °F, Time 1.00 hour	1g
pH	13 - 14	13 - 14

Descriptive Properties
Active ingredients (%)	34
Appearance	clear to hazy, colorless
Content (%)	20		K2O equivalent

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PWACK9530 / 205059

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