Ultra-high-surface-area hydrophilic fumed silica with maximum thixotropic efficiency for LSR, CMP slurries, and high-end specialty systems.
SEMISIL 380 is the highest surface area grade in our hydrophilic portfolio, designed for extreme rheology control. As an ultra-fine hydrophilic fumed silica 380, it provides the most efficient thickening and thixotropic properties available for high-tech industrial applications.
Surface Area (BET): 380 ± 30 m²/g
CAS Number: 112945-52-5
Key Advantage: Unmatched thickening efficiency, maximum clarity, and nano-abrasive precision.
Provides extreme transparency and high tear strength for SEMISIL 380 in high-precision molded parts.
The preferred hydrophilic fumed silica 380 for semiconductor wafer polishing, ensuring a scratch-free, nano-smooth surface.
Optimizes battery performance by creating a stable gel network with SEMISIL 380 at minimal dosages.
Ensures absolute sag resistance for hydrophilic fumed silica 380 in high-build vertical applications.
The massive surface area of SEMISIL 380 allows for a highly dense 3D hydrogen-bonding network at low concentrations.
With primary particles around 7nm, SEMISIL 380 provides ultra-fine mechanical polishing without surface defects.
Hydrophilic fumed silica 380 ensures the lowest possible haze in transparent polymers due to its exceptional fineness.
SiO2 ≥ 99.8%: This premium hydrophilic fumed silica 380 maintains chemical integrity in highly sensitive electronic and medical-grade applications.
| Property | Standard Value | Unit | Method |
|---|---|---|---|
| Specific Surface Area (BET) | 380 ± 30 | m²/g | GB/T 20020 |
| pH (4% dispersion) | 3.6 ~ 4.5 | – | GB/T 20020 |
| Loss on Drying (2h @ 105°C) | ≤ 1.5 | wt% | GB/T 20020 |
| SiO₂ Content | ≥ 99.8 | % | GB/T 20020 |
Non-DG Compliance: Fully safe for Railway, Sea (Shipping), and Truck transportation. 20'FCL Loading • 160kg / pallet…
Non-DG Compliance: Fully safe for Railway, Sea (Shipping), and Truck transportation.
20'FCL Loading • 160kg / pallet (16 bags) • 10 pallets / 1600kg total
40'HQ Loading • 200kg / pallet (20 bags) • 20 pallets / 4000kg total
Yes. SemiSIL 380 is a 1:1 technical replacement for high-surface-area hydrophilic grades. It provides the identical nano-scale reinforcement and thixotropic efficiency expected from hydrophilic fumed silica 380, ensuring a seamless transition for LSR and CMP slurry manufacturers.
Hydrophilic fumed silica 380 offers significantly higher thickening efficiency due to its massive surface area. You can achieve the same thixotropic index as the 200 grade while using 20% to 30% less material, making hydrophilic fumed silica 380 the superior choice for high-transparency systems.
To achieve 100% optical clarity, hydrophilic fumed silica 380 requires intense high-shear dispersion. We recommend using a rotor-stator mixer or a three-roll mill. Proper dispersion breaks down all micro-agglomerates, allowing the hydrophilic fumed silica 380 to form a perfectly transparent 3D network.
Because of its extremely high surface area, hydrophilic fumed silica 380 is highly hygroscopic. Absorbed moisture can interfere with hydrogen bonding and reduce the thickening effect. Always store hydrophilic fumed silica 380 in a dry, sealed warehouse and use it promptly after opening the multi-layer kraft bags.
Free 1 kg sample for qualified buyers. Factory-direct pricing. 48h dispatch from Anhui R&D center.