What is 100 cSt silicone oil used for?
The balanced mid grade: glide fraction in polish blends, barrier films in personal care, release, heat-resistant lubrication of polymer parts, and general antifoam and water-repellency duty. It forms a coherent, uniform film without the drag of heavier oils. Typical spec: 0.965 specific gravity, ≥ 315 °C open-cup flash point.
Dimethicone- ▸ Personal-care barrier / de-soaping film: a uniform protective film in hand creams and lotions at as little as 0.1%
- ▸ Polish glide fraction: the low-viscosity lubricant in a polish blend that eases application and rub-out
- ▸ Release agent / mold release with a coherent, low-migration film
- ▸ Heat-resistant industrial lubricant and hydraulic-fluid component (flash point >275 °C)
- ▸ Multi-function additive: antifoam, water-repellent, liquid dielectric and heat-transfer oil
Don’t see your viscosity? We can custom-formulate silicone fluid to your target cSt — tell us your spec.
Not sure which grade? Silicone oil viscosity guide (5 to 500,000 cSt) · All silicone oils
- ▸ Safety Data Sheet (SDS) PDF · SDS
- ▸ Typical Certificate of Analysis (CoA) PDF · COA
Values shown are typical for the current commercial grade. A lot-specific Certificate of Analysis accompanies every shipment; the grade-specific SDS is available on request.
Mid- and high-viscosity polydimethylsiloxane fluids (>= 5 cSt) are reported as not meeting GHS hazard-classification criteria. The grade-specific SDS governs. A full SDS is supplied with every shipment and on request; hazard status is confirmed against the grade-specific SDS.
Cross-reference: comparable to XIAMETER PMX-200 Silicone Fluid 100 cSt (a Dow product): the same linear polydimethylsiloxane chemistry at the same nominal viscosity. RawSource is independent of Dow; confirm grade-critical specs against the RawSource TDS and lot CoA.
Silicone Oil 100 cSt is the balanced grade: mid viscosity gives a coherent, more uniform film than the thin grades without the drag of the heavy ones. It is marketed directly into personal-care barrier films and into polish blends as the low-viscosity glide fraction, and serves as a release agent, heat-resistant lubricant and multi-function additive.
Frequently Asked Questions
What is silicone oil 100 cSt used for?
100 cSt silicone oil (dimethicone / PDMS) is the balanced mid grade: the glide fraction in polish blends, a barrier film in personal care, a release agent, a heat-resistant lubricant for polymer parts, and a multi-purpose antifoam and water-repellent additive. It forms a coherent, uniform film without the drag of heavier oils.
Is 100 cSt silicone oil the same as dimethicone or PDMS?
Yes. Silicone oil, silicone fluid, dimethicone and PDMS all name the same linear polydimethylsiloxane (CAS 9006-65-9) — 100 cSt is the viscosity grade, not a different chemistry. Because PDMS is a polymer, properties are reported per grade rather than as one fixed molecular weight.
Is 100 cSt silicone oil flammable?
No. With a flash point of ≥ 315 °C (open cup), the 100 cSt grade sits far above GHS flammable-liquid cut-offs, and mid- and high-viscosity PDMS is not otherwise GHS-classified. Only the volatile sub-5 cSt silicone fluids are flammable. The grade-specific SDS ships with every order.
What is the CAS number for silicone oil 100 cSt?
Silicone oil 100 cSt carries CAS 9006-65-9, with repeating-unit formula (C2H6OSi)n; some manufacturers list the equivalent trimethylsiloxy-terminated PDMS under CAS 63148-62-9. The cSt figure is the viscosity grade, not a separate substance — all dimethicone grades share the same CAS registry.
What packaging is 100 cSt silicone oil supplied in?
Bulk only: 55-gallon drums, 275-gallon IBC totes, and 5-gallon pails, with pallet and full-truck quantities quoted on request. A lot-specific Certificate of Analysis accompanies every shipment; the grade SDS is available on request. Submit an RFQ with your target volume and packaging.