Our hydrophilic (untreated) fumed silica powder and dispersion products provide exceptional performance benefits for a wide variety of applications and industries.
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Our CAB-O-SIL® and CAB-O-SPERSE® hydrophilic fumed silica products are used around the world to meet challenging performance requirements. Due to their unique particle characteristics, our hydrophilic fumed silicas provide superior performance benefits for many types of applications, including:
The versatility of our fumed silica is related to its wide range of surface areas and aggregate structure, both of which lead to unique performance benefits, including:
Are you interested in learning more about hydrophilic pyrogenic silica? Contact us today to secure an expert consultation!
HDK® pyrogenic silica is a loose, bulky white powder. Due to our integrated production system with its statistical process control and highly efficient reactor dynamics, the pyrogenic silica we produce is exceptionally pure. Pyrogenic silica from WACKER is of a low order of toxicity, chemically inert and does not conduct either electricity or heat. All pyrogenic silicas feature a large specific surface area: 18 grams of a typical pyrogenic silica has a surface area that would cover the size of a football field.
Hydrophilic HDK® is manufactured by the hydrolysis of volatile chlorosilanes in an oxyhydrogen flame. In chemical terms, the loose white powder consists of highly pure amorphous silicon dioxide. Hydrophilic silica is wetted by, and can be dispersed in, water.
Hydrophobic HDK® is produced by the chemical reaction of hydrophilic HDK® with reactive silanes, e.g. chlorosilanes or hexamethyldisilazane. Hydrophobic silica has water-repellent properties and is not dispersible in water.
If you want to learn more, please visit our website hydrophobic colloidal silica.