Tokuyama Products,
Rheological Additives & Services

Tokuyama manufactures fumed silica under the

brand name of REOLOSIL®. REOLOSIL® fumed silica is an exceptionally versatile product.


Tokuyama’s REOLOSIL® structure adds reinforcement and rheology to resins. Customers actively use REOLOSIL to thicken paints, polish semiconductor wafers and improve transfer-ability of inks. 


REOLOSIL® fumed silica

Ravago Chemicals prides itself on our customer service, and your questions and concerns are important to us.

The Tokuyama Products, Fumed Silica & Services We Offer Include:


Untreated rheological additives (QS grades)

  • Grades – 8 untreated grades
  • BET Surface area = ranging from 90 – 405 m2/g
  • Densed and undensed grades
Hyrophilic Untreated rheological additives - fumed silica


Treated rheological additive

  • PDMS – Polydimethylsiloxane (PM grades)
  • DiMeDi – Dimethyldichlorosilane (DM grades)
  • HMDZ – Hexamethyldisilazane (HM grades)


hydrophobic - Treated rheological additive

Matting Agents

Untreated fumed silica for matting

  • Grades (FM grades) High quality matting agent
    BET Surface area = ranging from 175 – 295 m2/g
    Particle sizes = ranging from 1.5 – 4.2
  • Consistent gloss at 60 & 80 degree
  • Easy Dispersing Grades
  • Considerable HAZE reduction at lowest gloss levels
matting agent - fumed silica - Car interior

We're a Solutions Company

Partnering with you at the speed of now! – Delivering solutions faster allows our customers a competitive advantage in a very fast paced world. Dedicated to one thing—providing customers with solutions necessary for their successful growth.

  • Global Business, Vision & Support
  • Regional Expertise with a National Footprint
  • Knowledgeable Technical Sales Team
  • Local Warehouse, in stock products


Our REOLOSIL® fumed silica (treated & untreated) products provide exceptional performance benefits for a wide variety of applications and industries.

Tell us about your project needs and we can selct the right material for your application together!

Get product guidance and a free quote

Ravago Chemicals North America | 1900 Summit Tower Blvd, Suite #900 | Orlando, FL 32810