Eco-SilTM is amorphous biogenic silica with high purity and surface area, harvested from rice hulls.

It is an ecofriendly alternative to fumed

(pyrogenic) silica, manufactured in the

U.S. It has been “Generally Recognized as

Safe” (GRAS) by the FDA; it contains no

heavy metals. It has 3X the bulk density of

fumed silica, resulting in decreased shipping

costs, easier handling on the manufacturing

floor and lower dusting.



picture of rice hulls and silica

Other characteristics include:

 Submicron particle size

 Hydrophilic surface

Product Data Sheet


Competitive Differentiators




BET Surface Area (m2/g)

pH (4% Aqueous Slurry)

325 Mesh Residue (45μm)

Bulk Density (lb/ft3)

Loss on Heating (110°C)

Loss on Ignition (1000°C)

Specific Gravity

Refractive Index

X-Ray Form

SiO2 Content

Oil Adsorption

Average Particle Size



260 – 320

6.5 – 7.0

< 0.025%


< 2.3%

< 2%




> 99.8%

150g / 100g Oil

0.3 -10μm



Silica Nanoparticles


Low Cost & Renewable


Efficient Manufacturing


Ecofreindly Production

Eco-Sil       Fumed Silica

Material Safety Data Sheet and Product Sales Specifications for Eco-Sil™ may be obtained by contacting the VP of Sales & Marketing:

3300 Bee Cave Road, Suite 650-211, Austin TX 78746