CISIL 200 – High-Performance Fumed Silica for Sealants & Elastomers

Reinforcement, Rheology, and Stability – in One Fine Powder

Why Use Fumed Silica in Sealants?

Sealants must endure mechanical stress, temperature changes, and UV exposure while maintaining flexibility and adhesion. Fumed silica is essential in these formulations due to its ability to provide:
- Rheology control (anti-sag, anti-settling)
- Thixotropy for smooth application
- Mechanical reinforcement
- Shape stability
- Improved shelf life

Introducing CISIL 200 – Chemion’s Hydrophilic Fumed Silica

CISIL 200 is a highly pure, amorphous silicon dioxide produced via flame hydrolysis, with a specific surface area of ~200 m²/g (BET) and particle sizes in the nano-range.

Property	Typical Value
SiO₂ Content	> 99.8%
BET Surface Area	~200 m²/g
pH (4% in water)	3.8 – 4.3
Bulk Density	~50 g/L
Loss on Drying (105°C)	≤ 1.5%
Particle Size (Agglomerate)	5–50 μm (non-crystalline)
Appearance	White, ultra-light powder

Applications in Sealant Formulation

Rheological Modifier / Thickener

CISIL 200 forms thixotropic networks in polar matrices:
- Prevents sagging in vertical joints
- Enables easy extrusion
- Stabilizes pigments and fillers during storage

Reinforcing Filler

Improves tensile strength, elongation, and modulus in MS polymer, PU, and acrylic systems.

Anti-settling Agent

Maintains formulation uniformity in storage with high pigment and filler loading.

Dosage Guidelines

Sealant Type	Typical Dosage
Polyurethane	1.0% – 4.0%
MS Polymer	1.0% – 3.5%
Acrylic Emulsion	0.5% – 1.5%
Silicones (RTV)	2.0% – 7.0%

Note: High-shear dispersion is needed for optimal performance.

Formulation Compatibility

- Works with common plasticizers (DINP, DOA)
- Stable with carbon black, talc, CaCO₃
- Supports pigment dispersion
- No reaction in moisture/peroxide-cured systems

Why Choose CISIL 200 from Chemion?

- Consistent particle size
- Reliable performance
- High dispersibility
- REACH-compliant and safe

Packaging & Logistics

- 10 kg or 20 kg double-layer bags
- Palletized and wrapped
- Global shipping from certified China plant

Ready to Reinforce?

CISIL 200 is the ideal rheology and reinforcement solution for MS, PU, and acrylic sealants.
Contact: info@chemionag.com
Website: www.chemionag.com

CHEMION AG – We Build the Chemistry that Holds Things Together.