Wide Temperature Dielectric Silicone Fluids
| Chemical Name: | Linear Polydimethylsiloxane (Dimethylpolysiloxane or PDMS) |
| Product Category: | Silicone Fluids– Products |
| Structural Formula: |  |
| CAS No.: | CAS No. 63148-62-9 |
| EINECS: | 203-492-7 |
| Molecular Formula: | C6H18OSi2 |
| Molecular Weight: | 162.38 g/mol |
Wide Temperature Dielectric Silicone Fluids
Wide Temperature Dielectric Silicone Fluids (-50°C to 230°C) are clear, colorless, and odorless linear Polydimethylsiloxane (PDMS) fluids (CAS# 63148-62-9). They offer excellent dielectric strength, high flash points, superior thermal stability, and exceptional resistance to oxidation. With low vapor pressure and broad material compatibility—including metals, rubbers, and plastics—these fluids are ideal for dielectric, heat transfer, and thermal management applications.
Wide Temperature Dielectric Silicone Fluids are 100% linear Polydimethylsiloxane (PDMS) fluids (CAS# 63148-62-9), ideal for use as dielectric fluids and coolants in various industrial applications. These fluids are clear, colorless, odorless, and inert to most metals, plastics, and rubbers.
Key Features:
- High dielectric strength
- Wide temperature range
- Low pour point and high flash point
- Hydrophobic (insoluble in water)
- Low viscosity change with temperature
- Excellent oxidation resistance
Viscosity Range:
- 20cSt to 100cSt (measured at 25°C)
Applications:
- Electrical transformers
- Capacitors and other high-voltage equipment
Product Options:
- Dow Corning 200® Fluid:
- 20cSt, 50cSt, 100cSt
- Xiameter® PMX-200:
- 20cSt, 50cSt, 100cSt
- Momentive SF96 Series:
- SF96-20, SF96-50, SF96-100
- GE SF96 Series:
- SF96-20, SF96-50, SF96-100
- Momentive Element 14® PDMS:
- 20cSt, 50cSt, 100cSt
- Rhodorsil® 47 V:
- 50cSt, 100cSt
For High Purity Needs: For fluids with <50ppm water content and IEC 836 specifications, see STO-50 Dielectric Silicone Fluid.
Product Data:
| Property | PSF-20cSt | PSF-50cSt | PSF-100cSt |
| Chemical name | Polydimethylsiloxane | Polydimethylsiloxane | Polydimethylsiloxane |
| CAS # | 63148-62-9 | 63148-62-9 | 63148-62-9 |
| Appearance | clear, colorless | clear, colorless | clear, colorless |
| Odorless | Yes | Yes | Yes |
| Hydrophobic | Yes | Yes | Yes |
| Viscosity @ 25°C | 20cSt | 50cSt | 100cSt |
| V.T.C. | 0.59 | 0.59 | 0.59 |
| Soluble in water | no | no | no |
| Pour point | -60°C | -55°C | -55°C |
| Flash point | 232°C | 285°C | 315°C |
| Boling point | >200°C | >250°C | >250°C |
| Vapor pressure @ 25°C | <1mmHg | <1mmHg | <1mmHg |
| Specific heat @ 25°C J/g °C | 1.7 | 1.5 | 1.5 |
| Thermal expansion cc/cc/°C | 0.00107 | 0.00106 | 0.00096 |
| Thermal conductivity g/cal/cm/sec °C | 0.00034 | 0.00036 | 0.00037 |
| Service temperature | -50°C to 220°C | -40°C to 230°C | -40°C to 230°C |
Properties of Dielectric Silicone Fluids
- Clear, Colorless, Odorless: Clean and safe for use.
- Long Service Life: Durable within recommended temperature ranges.
- Low Viscosity: Reduces strain on pumps.
- Low Pour Points: Effective at temperatures as low as -60°C.
- Thermal Conductivity: 0.00034 to 0.00037 g/cal/cm/sec°C.
- Specific Heat Value: 0.36 cal/g°C.
- Low Viscosity Change: Stable at low temperatures with minimal viscosity increase.
- Better Than Petroleum Oils: Less viscosity change than traditional oils.
- 100% Synthetic: Made from high-quality synthetic materials.
- Environmentally Friendly: VOC Exempt & HAP Free.
- Hydrophobic: Does not absorb water.
Packaging Specifications
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Wide Temperature Dielectric Silicone Fluids : Guide
Wide Temperature Dielectric Silicone Fluids offer excellent dielectric strength, ranging from 375 to 400 volts/mil, ensuring reliable electrical insulation performance. These fluids are designed with exceptional thermal conductivity values between 0.00034 to 0.00037 g/cal/cm/sec °C (0.15 to 0.16 W/m °C), making them effective in heat dissipation. With specific heat values of 0.36 cal/g °C (1.6 to 1.5 J/g °C), they efficiently absorb and retain heat.
One key advantage of Wide Temperature Dielectric Silicone Fluids is their low Viscosity-Temperature Coefficients (V.T.C.), which results in minimal viscosity increase, even under extremely low temperatures. This feature allows these fluids to circulate effectively in systems operating in challenging cold environments, providing consistent temperature control.
For applications requiring a specific viscosity range, our Pure Silicone Fluids are available, offering a wide range from 0.65 cSt to 20,000,000 cSt.
