Knowde Enhanced TDS
Identification & Functionality
- Base Oil Type
- Chemical Family
- Heat Transfer Fluid Type
- Product Type
- CAS No.
- 63148‐62‐9
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Ready-to-Use Product Features
- Product Highlights
PSF‐5cSt Silicone Heat Transfer Fluid is characterized by its low pour points, low temperature stability, wide service temperature range, low viscosity change at temperature (low V.T.C.), low surface tension, high dielectric strength, long service life, and hydrophobic nature (insoluble in water).
PSF‐5cSt Silicone Heat Transfer Fluid has a low viscosity‐temperature coefficient or V.T.C. (viscosity at 99°C ÷ viscosity at 38°C). Thus, it will not exhibit a wide viscosity increase at the lower temperatures. For example, at –40°C, its viscosity increases to only 40cSt. This is critical for baths that have pumping systems that cannot operate with higher viscosity fluids.
- Features
- 100% PDMS Silicone Fluid.
- Low viscosity: 5cSt at 25°C.
- Excellent Low Temp Serviceability.
- Hydrophobic: Insoluble with water.
- Compatible with virtually all O‐rings, gaskets, hoses, valves and seals.
- Low Pour Point: ‐90°C.
- Flash Point: 135°C.
Applications & Uses
- Markets
- Application Area
- Applications
Heat transfer fluid in freeze drying equipment, heat transfer medium in lyophilization thermostats and cryostat fluids, calibration bath fluids for low temperature, low-temperature constant temperature baths, low temperature circulating baths.
Properties
- Physical Form
- Appearance
- Clear, colorless, odorless fluid
- Typical Properties
- Thermal Properties
- Electrical Properties
| Value | Units | Test Method / Conditions | |
| Non‐Flammable | Yes | — | — |
| Specific Gravity | 0.913 | — | — |
| Viscosity‐Temp Coefficient | 0.55 | — | — |
| Flash Point | 134.0 | °C | — |
| Pour Point | -100.0 | °C | — |
| Refractive Index | 1.396 | — | — |
| Surface Tension | 19.7 | — | — |
| Vapor Pressure (25°C) | 1.0 | mmHg | — |
| Max Volatility (150°C) | 90.0 | % | — |
| Viscosity (25°C) | 5.0 | cSt | — |
| Viscosity (0°C) | 8.0 | cSt | — |
| Viscosity (‐20°C) | 14.0 | cSt | — |
| Viscosity (‐40°C) | 40.0 | cSt | — |
| Value | Units | Test Method / Conditions | |
| Boiling Point | min. 200 | °C | — |
| Thermal Conductivity (50°C) | 0.00028 | g cal/cm.sec.°C | — |
| Coefficient of Thermal Expansion | 0.00109 | cc/cc °C | — |
| Specific Heat | 0.39 | cal/g/ °C | — |
| Value | Units | Test Method / Conditions | |
| Dielectric Strength | 375.0 | volts/mil | — |
| Dielectric Constant (50Hz, 25°C) | 2.6 | — | — |
| Volume Resistivity (25°C) | 1.0 x 10¹⁵ | ohm‐cm | — |
Packaging & Availability
- Packaging
1‐gallon (3.78 liters) 3.45kg net wt. 5‐gallon pail (18.9 liters) 17.25kg net wt. 55‐gallon drum (208 liters) 190kg net wt.