Precipitated Silica Fillers Improve the Performance of Industrial and Specialty Applications
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Last Updated on June 25, 2025
Precipitated silica, an amorphous form of silicon dioxide, is a versatile, high-performance material used across a wide array of industrial and specialty applications worldwide. Its porous structure, chemical purity and high surface area make it ideal for reinforcing, thickening, absorbing or polishing agents in products ranging from tires and sealants to pharmaceuticals and cosmetics.
Why Use Precipitated Silica?
Industries value precipitated silica for its ability to:
- Improve mechanical strength and tear resistance in rubber products
- Enhance free-flow, moisture absorption, and dispersion in food, pharmaceuticals, and cosmetics
- Act as a matting agent or anti-caking additive in paints and powdered products
As a result, they are commonly used as white reinforcing fillers in products like tires, shoe soles, hoses, belt conveyors and thermoplastic elastomer compounds.
Featured Product Line: REFORSIL® Precipitated Silicas from Silkimya
H.M. Royal offers a complete line of REFORSIL® precipitated silica, available in both powder and granular forms. These products are engineered by Silkimya, S.A. de C.V. a leading manufacturer with over 40 years of experience in the design and production of precipitated silica. They meet a broad range of technical specifications and performance goals.
| Product | BET Surface Area (m²/g) | Average Particle Size (µm) | DBP Absorption (ml/100g) | pH (5% suspension) |
| S-180 | 185 | 1.5 | 290 | 7.0 |
| S-150 | 150 | 1.5 | 250 | 7.0 |
| S-125 | 125 | 1.5 | 245 | 7.0 |
These grades are ideal for:
- Tires
- Mechanical rubber goods
- Rubber shoe soles
- Battery separators
- Oral care
- Food, beverage and nutrition
- Animal feed
REFORSIL precipitated silicas offer many performance advantages such as:
-
Excellent hardness
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Enhanced tear and abrasion resistance
-
Improved tensile strength
Each product maintains excellent purity, with a minimum 98% SiO₂ content, a neutral pH, and consistent performance across multiple applications.
Expanding Production Capacity to Serve North America
To strengthen support for the North American market, Silkimya has constructed a new production facility in the Port of Altamira, Tamaulipas, Mexico. This state-of-the-art plant manufactures both precipitated silicas and sodium silicate, reinforcing Silkimya’s commitment to quality and supply reliability.
H.M. Royal offers many REFORSIL. Whether you need high DBP absorption for thickening, smaller particle sizes for uniform dispersion, or specific surface properties, Silkimya’s product line allows for targeted solutions. With options varying in BET surface area (125–185 m²/g) and particle size, formulators can select the optimal grade based on processing, flow, or reinforcement requirements.
For more information or help selecting the right product for your formulation, contact an H.M. Royal expert today.
