Low Viscosity Pure Silicone Fluids
| Chemical Name: | Polydimethylsiloxane Fluid / PDMS Silicone Oil |
| Product Category: | Pure Silicone Fluids – Silicone Fluids |
| Structural Formula: |  |
| CAS No.: | CAS No. 63148-62-9 |
| EINECS: | 203-492-7 |
| Molecular Formula: | C6H18OSi2 |
| Molecular Weight: | 162.38 g/mol |
Low Viscosity Pure Silicone Fluids
Low Viscosity Pure Silicone Fluids are clear, colorless, and odorless Polydimethylsiloxane (PDMS) fluids or Silicone Oils, with viscosities ranging from 5 cSt to 20 cSt at 25°C.
These Low Viscosity Silicone Fluids offer exceptional lubricity, low pour points, and low surface tension, making them ideal for applications requiring smooth, high-performance fluids. They also exhibit low viscosity change with temperature (low VTC), ensuring stable performance across varying conditions.
With high dielectric strength, a refractive index (RI) between 1.3970 and 1.4000, and wide service temperature range, these fluids are perfect for applications in electronics, optics, and other industries. Additionally, they show inertness to nearly all substrates, ensuring compatibility with a wide range of materials.
| Viscosity | 5cSt | 10cSt | 20cSt |
| Specific Gravity | 0.918 | 0.818 | 0.853 |
| Pour Point | -90°C | -70°C | -65°C |
| Flash Point | 135°C | 163°C | 232°C |
| Refractive Index | 1.3970 | 1.3990 | 1.4000 |
| V.T.C | 0.54 | 0.56 | 0.59 |
| Thermal Expansion cc/cc °C | 0.00109 | 0.00108 | 0.00107 |
| Thermal Conductivity g/cal/cm/sec °C | 0.00028 | 0.00032 | 0.00034 |
Properties:
- Low viscosity PDMS Silicone Oils…viscosities slightly higher than water
- Low pour points (as low as -90°C)
- Wide Service Temperature Range
- Low surface tension fluids (high spreadability)
- Low viscosity change at temperature (low VTC)
- RI Values between 1.3970 to 1.400
- High Dielectric Strength
- Newtonian behavior under shear
- Excellent Lubricity
- California VOC Exempt…replacement for petroleum based solvents that are not VOC Compliant
Applications Include:
- Laboratory Bath Fluids
- Heat Transfer Fluids
- Dielectric Fluids
- Low Viscosity Damping Fluids
- ORC Turbo Generator Fluids
- Low Viscosity Hydraulic Fluids
- Refractive Index Matching Fluids
- RI Matching Fluids for LED and Optics
- Low Dielectric Constant Fluids for Photonics
- VOC Exempt Fluids for Renewable Energies
- Lubricants for Plastic Parts
- Lubricants for Rubber Parts
Packaging Specifications
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Polydimethylsiloxane Fluid : Guide
Low Viscosity Silicone Fluids are ideal for use as laboratory bath fluids and heat transfer fluids due to their low viscosity, low pour points, minimal viscosity change with temperature, and high dielectric strength. These properties make them especially effective in systems that require efficient circulation and pumping, even at extremely low temperatures. Unlike higher viscosity fluids, their low viscosity ensures easy flow and handling in challenging environments.
The low molecular weight and refractive index values of Low Viscosity Pure Silicone Fluids make them indispensable in Optics research, LED technologies, and Sensor technologies, where high-performance fluid properties are essential.
