Name: SEMISIL D250 (AEROSIL® R 976 equivalent)
Brand: SEMITECH

Typical Applications

AdhesivesSealantsEpoxyVery high surface area

SEMISIL D250 (equivalent to AEROSIL® R 976) is a high-performance dds (dimethyldichlorosilane) treated fumed silica manufactured by SEMITECH. With a BET surface area of 225–275 m²/g, SEMISIL R976 delivers precise rheology control and reinforcement across demanding industrial formulations.

Quick Profile

Surface Area (BET): 225–275 m²/g
Surface Treatment: DDS (Dimethyldichlorosilane) treated
Carbon Content: 1.3–2.2%
pH (4% dispersion): 3.8–5.0
Composition: SiO₂ ≥ 99.8%
CAS Number: 112945-52-5

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Industries & Applications

- Adhesives - Sealants - Epoxy - Very high surface area

Adhesives
Sealants
Epoxy
Very high surface area

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Why Choose SEMISIL R976

- 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.