Name: SEMISIL S4-250 (AEROSIL® R 106 equivalent)
Brand: SEMITECH

Typical Applications

2-pack epoxyAnti-corrosion coatingsToner

SEMISIL S4-250 (equivalent to AEROSIL® R 106) is a high-performance d4 (octamethylcyclotetrasiloxane) treated fumed silica manufactured by SEMITECH. With a BET surface area of 220–280 m²/g, SEMISIL R106 delivers precise rheology control and reinforcement across demanding industrial formulations.

Quick Profile

Surface Area (BET): 220–280 m²/g
Surface Treatment: D4 (Octamethylcyclotetrasiloxane) treated
pH (4% dispersion): ≥3.7
Composition: SiO₂ ≥ 99.8%
CAS Number: 112945-52-5

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Industries & Applications

- 2-pack epoxy - Anti-corrosion coatings - Toner

2-pack epoxy
Anti-corrosion coatings
Toner

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Why Choose SEMISIL R106

- Factory-direct pricing — 20–40% cost advantage vs. European manufacturers - Consistent quality — ISO 9001 certified,…

Factory-direct pricing — 20–40% cost advantage vs. European manufacturers
Consistent quality — ISO 9001 certified, full CoA with every shipment
Technical support — formulation assistance and application testing
Flexible supply — from 25 kg sample drums to 20-ton container loads, 2–4 week lead time

Request a Sample or Quote

Free 1 kg sample for qualified buyers. Factory-direct pricing. 48h dispatch from Anhui R&D center.