DOWSIL™ 520 Dilutable Water Repellent Emulsion

What is DOWSIL™ 520 Dilutable Water Repellent Emulsion?

A silane/siloxane emulsion blend, dilutable in water to formulate a water repellent.

For use on mineral substrates such as brick, stone, concrete and mortar that require water repellency

Easily diluted with water for ready use
Produces a hydrophobic treatment that inhibits water absorption
Excellent performance and stability at (5–20%) active ingredient levels
Deep penetration of absorbent surfaces due to small molecular structure provides added repellency
Reduction in water absorption reduces spalling due to freeze-thaw and efflorescence, thereby increasing the life of the substrate
Penetrating treatment will not change appearance of substrate
Solvent-free and releases little Volatile Organic Compound (VOC) upon application

Application Benefits
Resistance Type	Water Resistance

Typical Properties
Active Content	40 %
Color	White
Flash Point, Closed Cup	> 100 °C
Hydrophobic	true
pH	3.5-5.5
Shelf Life	720 Days
Specific Gravity	0.985
Substrate	Cementitious-Based, Natural Stone
Surfactant Type	Nonionic
Use	Post-Treatment