Silicone Fluids & Oils Available — Bulk Only

Silicone Oil 12,500 cSt (Dimethicone, PDMS)

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

The polish-active grade at 12,500 cSt — a high-viscosity dimethicone (PDMS) that builds depth of gloss, and a recognised damping and hydraulic-stabiliser medium.

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HS Code
3910.00
At a Glance
Material Family
Silicone Fluids & Oils
Record Type
Polymer fluid
Primary Role
Slip / Release · Lubrication
Physical State
Liquid
Appearance
Clear, colorless, odorless fluid
Applications & Use Cases
  • Polish active ingredient: high-gloss automotive, furniture, metal and specialty polishes with easy rub-out and buffing
  • Damping medium and hydraulic stabilizer — high compressibility and damping action
  • Electrical insulating / dielectric fluid
  • Antifoam / foam control for petroleum production and refinery operations
  • Elastomer / plastics lubricant, mold release and leather/textile finishing — durable, tenacious film
Physical Properties
Viscosity
12500 cSt @ 25 °C
Specific gravity
0.974 @ 25 °C
Refractive index
1.403 @ 25 °C (nD)
Flash point
≥ 315 °C (open cup)
Surface tension
21.5 mN/m @ 25 °C
Pour point
≈ −46 °C (method-dependent)
Average molecular weight
~67,700 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 12,500 cSt Dimethicone 12,500 cSt Silicone fluid 12,500 cSt PDMS 12,500 Polydimethylsiloxane 12,500 cSt Dimethyl silicone oil 12,500 cSt 12,500 cSt silicone oil
Full Description

Silicone Oil 12,500 cSt is promoted from polish additive to polish ACTIVE: its high viscosity builds a durable, high-gloss film with depth of gloss, and it is the heavy partner in the classic 100:12,500 polish blend. It is also a recognized damping / hydraulic-stabilizer grade, a dielectric fluid and a foam-control fluid.

Frequently Asked Questions

What is silicone oil 12500 cSt used for?

Silicone Oil 12,500 cSt is a high-viscosity PDMS (dimethicone) fluid used in damping, heavy lubrication, release, and specialty formulation where a thick, slow-flowing silicone with substantial film body is required. Match the viscosity grade to your specific application.

What is silicone fluid 12500 cSt?

It is dimethicone (PDMS, CAS 9006-65-9) supplied at a nominal kinematic viscosity of 12,500 centistokes, a high-viscosity grade. The 12,500 cSt figure is the viscosity specification; confirm the exact value and reference temperature on the lot CoA.

What does cSt mean in silicone oil?

cSt is centistokes, the unit of kinematic viscosity. For silicone oil (PDMS, CAS 9006-65-9) it indicates fluid thickness; 12,500 cSt is a high-viscosity grade, much thicker than common 100-1,000 cSt fluids.

What is the CAS number for silicone oil 12500 cSt?

Silicone oil (dimethicone, PDMS) carries CAS 9006-65-9 with repeating-unit formula (C2H6OSi)n. The 12,500 cSt label is the viscosity grade, not a distinct CAS; all dimethicone viscosity grades share this number.

Can silicone oil 12500 cSt be supplied in bulk?

Yes. RawSource supplies 12,500 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.

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.