Call Now! (877) 383-6684
JLK Industries
custsvc@jlkindustries.com

Treated Silica

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
(lbs/ft3)
Density pH (5%) Surface Area
BET (m/gr2)
POS-35 &POS-35 FGK + 2-3 8-9 2 8-9 120-140
POS-355 ++ 2-3 8-9 2 8-9 120-140
POS-358 +++ 2-3 8-9 2 8-9 120-140
POS-66 &
POS-66 FGK
+ 3-5 8-9 2 10.5 max 140
POS-665 ++ 3-5 8-9 2 10.5 max 140
POS-668 +++ 3-5 8-9 2 10.5 max 140
POS-70 &
POS70 FGK
+ 6-8 8-9.5 2 8-9 100-110
POS-705 ++ 6-8 8-9.5 2 8-9 100-110
POS-708 +++ 6-8 8-9.5 2 8-9 100-110
POS-80 &
POS-80 FGK
+ 11-13 8-10 2 8-9 80
POS-805 ++ 11-13 8-10 2 8-9 80
POS-808 +++ 11-13 8-10 2 8-9 80
+ 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.

Product SiO2
(wt. %)
Ave. Particle Size (μm) Tap Density (gr/l) Moisture pH (5%) Surface Area
BET (m/gr2)
HS-22 ≥ 99.8 12 8-9 ≤ 2 4-6 130±30

Our Chemistry

Treatment

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 custsvc@jlkindustries.com with your request. We are typically very cost competitive vs. major suppliers such as Degussa, Wacker, Cabot, Octel, and J.M. Huber.