SemiSIL 300: Hydrophilic Fumed Silica 300
Hydrophilic fumed silica 300 is a high-purity additive engineered for maximum mechanical strength. As a premium hydrophilic fumed silica 300, it offers superior 3D network formation and unmatched optical clarity for high-end industrial formulas.
Quick Profile
- Surface Area (BET): 300 ± 25 m²/g
- Composition: SiO₂ ≥ 99.8%
- CAS Number: 112945-52-5
- Key Advantage: Exceptional tear resistance, zero optical haze, high thixotropic index.
Applications of Hydrophilic Fumed Silica 300
HTV Silicone Rubber
Ultimate reinforcement filler for hydrophilic fumed silica 300 to boost tear and tensile strength.
High-Clarity Coatings
Ensures precise rheology for hydrophilic fumed silica 300 without sacrificing optical transparency.
Printing Inks
Superior anti-settling for hydrophilic fumed silica 300, delivering sharp print definition.
Structural Adhesives
High thixotropic index of hydrophilic fumed silica 300 for stable vertical bead profiles.
Fine Chemicals
Extreme purity hydrophilic fumed silica 300 for stabilizing sensitive liquid formulations.
Key Functional Properties of Hydrophilic Fumed Silica 300
Superior Reinforcement
Highest surface area of hydrophilic fumed silica 300 creates a powerful 3D network for maximum tear and tensile strength.
Extreme Thixotropy
Achieve exceptional sag resistance with hydrophilic fumed silica 300, even in highly liquid or low-viscosity resin systems.
Optical Clarity
The nano-scale primary particles of hydrophilic fumed silica 300 ensure zero haze in transparent coatings and elastomers.
High Suspension Power
Strong hydrogen bonding in hydrophilic fumed silica 300 prevents heavy pigments from settling during long-term storage.
Surface Purity
SiO2 ≥ 99.8%: This premium hydrophilic fumed silica 300 ensures consistent chemical performance in sensitive industrial formulas.
Technical Data (TDS)
| Property | Standard Value | Unit | Method |
|---|---|---|---|
| Specific Surface Area | 300 ± 25 | m²/g | GB/T 20020 |
| pH (4% dispersion) | 3.6 ~ 4.5 | - | GB/T 20020 |
| Loss on Drying | ≤ 1.5 | % | GB/T 20020 |
| SiO₂ Content | ≥ 99.8 | % | GB/T 20020 |
Packaging & Logistics
Non-DG Compliance: Fully safe for Railway, Sea (Shipping), and Truck transportation.
20'FCL Loading
• 160kg / pallet (16 bags)
• 10 pallets / 1600kg total
• 10 pallets / 1600kg total
40'HQ Loading
• 200kg / pallet (20 bags)
• 20 pallets / 4000kg total
• 20 pallets / 4000kg total
Common Questions about Hydrophilic Fumed Silica 300
Is SemiSIL 300 a direct drop-in replacement for Aerosil® 300 or HDK® T30?
Yes. SemiSIL 300 is a 1:1 technical equivalent to standard 300 m²/g grades. It matches the reinforcement and transparency profile of leading brands, allowing a seamless transition for hydrophilic fumed silica 300 users looking for factory-direct supply.
Why use Hydrophilic Fumed Silica 300 instead of the 200 grade?
Choose hydrophilic fumed silica 300 when you require ultimate transparency and maximum mechanical reinforcement. While the 200 grade is a general-purpose thickener, the 300 grade provides a much stronger 3D hydrogen-bonding network for high-end HTV silicone and clear coatings.
What are the best dispersion methods for Hydrophilic Fumed Silica 300?
Due to its high surface area, hydrophilic fumed silica 300 requires high-shear equipment such as a Cowles dissolver or three-roll mill. Proper dispersion is essential to prevent agglomerates and ensure 100% optical clarity in your final formulation.
How does Hydrophilic Fumed Silica 300 affect the aging of epoxy resins?
Like most hydrophilic grades, hydrophilic fumed silica 300 may experience a slight viscosity drop over time in polar resins. For long-term shelf stability in structural epoxies, we recommend testing our hydrophobic treated grades alongside hydrophilic fumed silica 300.
What is the shelf life and storage protocol for SemiSIL 300?
Hydrophilic fumed silica 300 is highly sensitive to humidity due to its massive surface area. It must be stored in a dry, sealed environment. The guaranteed shelf life is 24 months from the date of manufacture when protected from moisture.
Factory-Direct fumed silica 300
Get technical-grade samples directly from our Anhui R&D center with 48h dispatch.
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