
Silico® DP801 Polydiphenylsiloxane Fluid
Silico® DP801 (CAS 68083-14-7) is a high-purity Polydiphenylsiloxane fluid with excellent thermal stability, oxidation resistance, and dielectric properties. It is ideal for high-temperature lubrication, thermal transfer, and electrical insulation. Widely used in aerospace, electronics, and vacuum technology, it improves compatibility with organic materials and low-temperature fluidity.
Product Introduction:
Silico® DP801 is a high-purity Polydiphenylsiloxane (CAS 68083-14-7) silicone fluid characterized by a high diphenyl content, delivering outstanding thermal stability, oxidation resistance, and dielectric performance. This clear, non-reactive silicone oil is ideal for high-temperature lubrication, thermal transfer systems, and electrical insulation. It is particularly effective in demanding applications where standard methylsilicone fluids fail. The phenyl structure significantly improves compatibility with organic materials and enhances low-temperature fluidity.
Silico® DP801 is widely used in aerospace, electronics, metallurgy, and vacuum technology, and can be tailored for use as high-performance diffusion pump oil, heat transfer medium, or as a base fluid for specialty formulations.
Technical Specifications:
Property | Silico® DP801-100 | Silico® DP801-500 |
---|---|---|
Appearance | Colorless to light yellow transparent fluid | Colorless to light yellow transparent fluid |
Viscosity (25°C, mPa·s) | 100 ± 10 | 500 ± 30 |
Refractive Index (25°C) | 1.470 – 1.480 | 1.470 – 1.480 |
Diphenyl Content (mol%) | ≥ 60 | ≥ 60 |
Volatile Content (150°C, 3h, %) | ≤ 1.0 | ≤ 1.0 |
Flash Point (°C, closed cup) | ≥ 280 | ≥ 290 |
Pour Point (°C) | ≤ -50 | ≤ -40 |
Applications
High-temperature heat transfer oil
Diffusion pump fluid
Electrical insulation for high-voltage systems
High-performance lubricants
Specialty coatings and formulations requiring enhanced oxidative stability
Packaging and Storage
- Available in 25kg, 200kg drums, or 1000kg IBCs. Store in a cool, dry place away from strong acids and bases. Shelf life: 12 months in unopened containers.
All technical data provided is based on current knowledge and experience. Users must test product suitability for intended applications.
No warranties are expressed or implied. Silico® assumes no liability for incidental or consequential damages.

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