Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

1-201-500K Dimethyl Silicone Oil

Dow Corning® 1-201-500K Dimethyl Silicone Oil is a high-purity, low-volatility fluid from the Dow Corning 1-201 Series. Featuring exceptional thermal stability, low surface tension, and outstanding dielectric properties, it’s widely used in lubrication, defoaming, mold release, and cosmetic formulations. Its 500,000 cSt viscosity ensures superior film-forming capability and long-lasting performance across demanding industrial applications.
  • 1 201 500k dimethyl silicone oil_bdd737d9
  • 1 201 500k dimethyl silicone oil_bdd737d9

Features Of 1-201-500K Dimethyl Silicone Oil

  1. High thermal stability up to 200 °C in inert atmospheres.

  2. Exceptional viscosity-temperature consistency across a wide operating range (−40 °C to +150 °C).

  3. Low surface tension and excellent spreading/wetting behavior on diverse substrates.

  4. Chemically inert toward most acids, bases, and oxidizing agents under normal conditions.

  5. Non-volatile, non-toxic, and compliant with FDA 21 CFR §175.300 for incidental food contact applications.

Typical Applications Of 1-201-500K Dimethyl Silicone Oil

  1. Release agent for rubber and plastic molding, including silicone rubber and thermoplastic elastomers.

  2. Base fluid in high-performance lubricating greases for precision instruments and automotive components.

  3. Defoaming and antifoaming agent in water-based paints, coatings, and industrial cleaning formulations.

  4. Dielectric fluid in transformers and capacitors requiring long-term insulation stability.

Specifications Of 1-201-500K Dimethyl Silicone Oil

Chemical TypeLinear polydimethylsiloxane (PDMS)
Product FormClear, colorless liquid
AppearanceWater-white, transparent, and odorless
Kinematic Viscosity (25 °C)500,000 ± 10% cSt
Density (25 °C)0.96–0.97 g/cm³
Refractive Index (25 °C)1.402–1.405
Flash Point (COC)≥310 °C
Volatility (200 °C, 24 h)<1.0 wt%


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