Silicone Fluids & Oils Available — Bulk Only

Silicone Oil 1,000 cSt (Dimethicone, PDMS)

Dimethicone
CAS 9006-65-9 · Formula (C2H6OSi)n

The classic antifoam base oil at 1,000 cSt — tenacious yet still dispersible. Dimethicone (PDMS) for foam control, tenacious lubrication and conditioning.

Request SDS
HS Code
3910.00
At a Glance
Material Family
Silicone Fluids & Oils
Record Type
Polymer fluid
Primary Role
Defoaming · Lubrication
Physical State
Liquid
Appearance
Clear, colorless, odorless fluid
Functional Roles
Defoaming Lubrication Slip / Release Viscosity Modification Defoaming / Foam Control Conditioning Emolliency
INCI Name
Dimethicone
Industries Served
Industrial Manufacturing Oil & Gas HI&I Cleaning Beauty & Personal Care Food & Beverage
Applications & Use Cases
  • ▸ Antifoam / foam-control base oil — the base material for silicone antifoam compounds, incl. food-grade and refinery foam control
  • ▸ Tenacious lubricant / release agent for O-rings, gaskets, valves, seals and food-grade freezer chain & cable
  • ▸ Polish and coatings additive — blended across viscosities to tune application ease and depth of gloss
  • ▸ Electrical insulating / dielectric fluid
  • ▸ Personal-care conditioning for skin and hair serums — slip, shine and long-lasting protection
Physical Properties
Viscosity
1000 cSt @ 25 °C
Specific gravity
0.971 @ 25 °C
Refractive index
1.403 @ 25 °C (nD)
Flash point
≥ 315 °C (open cup)
Surface tension
21.2 mN/m @ 25 °C
Pour point
≈ −50 °C (method-dependent)
Average molecular weight
~28,000 g/mol (approx., from viscosity)
Safety & Handling
Not classified under GHS

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.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
3910 . 00
Chapter 39
Plastics and articles thereof
Heading 39.10
Internationally harmonized (WCO HS)
Subheading 3910.00
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
9006-65-9
Molecular Formula
(C2H6OSi)n
INCI Name
Dimethicone
Synonyms & Trade Names
Silicone oil 1,000 cSt Dimethicone 1,000 cSt Silicone fluid 1,000 cSt PDMS 1,000 Polydimethylsiloxane 1,000 cSt Dimethyl silicone oil 1,000 cSt 1,000 cSt silicone oil
Full Description

Silicone Oil 1,000 cSt is the classic antifoam-concentrate base oil: high enough for a tenacious, persistent film yet still able to disperse and emulsify. It is the base material for silicone antifoam compounds and a tenacious release/lubricant for seals, valves and chain, plus a polish and coatings additive, a dielectric fluid and a personal-care conditioner.

Frequently Asked Questions

What is silicone oil 1000 cSt used for?

Silicone Oil 1,000 cSt is a heavier-viscosity PDMS (dimethicone) fluid used in lubrication, damping, release, polish, and formulation applications where more body and film thickness are needed than thinner grades provide. Match the viscosity grade to your specific application.

What is cSt in silicone oil?

cSt is centistokes, the unit of kinematic viscosity. For silicone oil (PDMS, CAS 9006-65-9) it indicates fluid thickness; 1,000 cSt is a comparatively heavy grade, far thicker than the 10-100 cSt fluids.

What is 1000 cSt oil?

1,000 cSt refers to the kinematic viscosity grade, meaning the fluid measures 1,000 centistokes. For dimethicone (CAS 9006-65-9) this is a heavy, slow-flowing silicone oil; confirm the exact value and reference temperature on the lot CoA.

What is the CAS number for silicone oil 1000 cSt?

Silicone oil (dimethicone, PDMS) carries CAS 9006-65-9 with repeating-unit formula (C2H6OSi)n. The 1,000 cSt designation is the viscosity grade, not a separate CAS; all dimethicone viscosity grades share this number.

Can silicone oil 1000 cSt be supplied in bulk?

Yes. RawSource supplies 1,000 cSt silicone oil in drum, tote, and IBC quantities to manufacturers. Request a bulk quote with your target volume and packaging; CoA and SDS are available on request.

Related Products
Silicone Transformer Oil (STO-50) — 50 cSt PDMS Dielectric Fluid
CAS 63148-62-9
Silicone Fluids & Oils
Amodimethicone
CAS 68037-59-2
Silicone Fluids & Oils
Cetyl Methicone
CAS 191044-49-2
Silicone Fluids & Oils
Amodimethicone
CAS 308070-89-5 · C24H40N2O3Si
Silicone Fluids & Oils
Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.

Ready to Source Silicone Oil 1,000 cSt (Dimethicone, PDMS)?

Our procurement team handles specification confirmation, lead time, and logistics.

Request a Quote