SILICA DIMETHYL SILYLATE- ▸ Rheology/thixotropy: Thickens oils and anhydrous bases and controls sag.
- ▸ Anti-settling: Suspends pigments and fillers in non-aqueous systems.
- ▸ Anti-caking/flow aid: Keeps powders free-flowing and moisture-resistant.
- ▸ Absorbent/soft-focus: Oil absorption and bulking in cosmetics.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Silica Dimethyl Silylate (CAS 68611-44-9) is a synthetic amorphous fumed silica surface-treated with dimethylsilyl groups to render it hydrophobic. It is used as a rheology modifier and anti-settling thickener for non-aqueous and oil-rich systems, as an anti-caking and flow aid, and as an absorbent and bulking agent.
Frequently Asked Questions
What does silica dimethyl silylate do?
Silica Dimethyl Silylate (CAS 68611-44-9) is a hydrophobic fumed silica that acts as a rheology modifier and anti-settling thickener in non-aqueous and oil-rich systems. It also functions as an anti-caking and flow aid for powders and as an absorbent and bulking agent.
Is silica dimethyl silylate the same as dimethicone?
No. Silica dimethyl silylate is a synthetic amorphous fumed silica whose surface has been treated with dimethylsilyl groups to make it hydrophobic, so it is a solid particulate. Dimethicone is a liquid polydimethylsiloxane (PDMS) fluid. They are chemically distinct materials with different functions.
What is silica dimethyl silylate made from?
It is made by surface-treating synthetic amorphous fumed silica (silicon dioxide) with dimethylsilyl groups, which renders the particle surface hydrophobic. The result is a treated fumed silica used for rheology control and anti-settling in oil-rich systems.
What is the HS code for silica dimethyl silylate?
It classifies under HS 2811.22 (Silicon dioxide). Confirm the destination-country tariff line with your customs broker, as national subheadings can extend beyond the six-digit HS code.
Can silica dimethyl silylate be supplied in bulk?
Yes. RawSource supplies silica dimethyl silylate in bulk quantities to coatings, adhesive, and personal-care manufacturers. Request a quote with your target volume and packaging; CoA and SDS are available on request.
