JLK supplies high quality, U.S. produced hydrophobic precipitated and fumed silica for a wide variety of applications and industries.
Our products are manufactured as single and multi-phase composites to enhance properties such as dispersion, stability, hydrophobicity and functionality. Due to their unique particle characteristics, and large surface area, our fumed silica provides superior performance and benefits for many types of consumer and industrial applications such as adhesives, plastics, sealants, coatings, inks, toner, cosmetics, inks, food additives, and defoamers. Our products are approved for use per under 21 CFR Sections 173, 175, and 176.
Precipitated Hydrophobic Silica
We supply treated silica at levels of hydrophobicity ranging from standard to very high. Our products have particle sizes ranging from 2 – 3 microns to 12 microns and Surface Areas ranging from 120 – 140 m2/gr to 80 m2/gr. Industrial, Food Grade and Kosher products are available.
|Product||Hydrophobicity Level||Ave. Particle Size (μm)||Bulk Density
|Density||pH (5%)||Surface Area
|POS-35 &POS-35 FGK||+||2-3||8-9||2||8-9||120-140|
|+ Standard ++ Medium +++ High|
Fumed Hydrophobic Silica
Our most popular product is hydrophobic fumed silica based upon raw silica with a surface area of 200 m2/gr and treated with PDMS. The resulting product has a surface area ~ 130 m2/gr.
|Ave. Particle Size (μm)||Tap Density (gr/l)||Moisture||pH (5%)||Surface Area
|HS-22||≥ 99.8||12||8-9||≤ 2||4-6||130±30|
Polydimethylsiloxane, Hexamethyldisilazane and Octamethylcyclotetrasiloxane surface treatments of our silica particles account for the hydrophobic behavior of our treated silicas. In most cases, these treatments determine the interactions of our silica particles with solids and liquids. The surface of our silica particles can be chemically modified by reacting various silanes and silazanes to give the required hydrophobicity necessary for your specific application.
Our products are available in both bags and super sacks.
Please call JLK Industries for samples, pricing or additional information. You can also email us at firstname.lastname@example.org with your request. We are typically very cost competitive vs. major suppliers such as Degussa, Wacker, Cabot, Octel, and J.M. Huber.