Knowde Enhanced TDS
Identification & Functionality
- Base Oil Type
- Chemical Family
- Heat Transfer Fluid Type
- Product Type
- CAS No.
- 68083‐14‐7
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Highlights
DPDM‐400 High Temperature Silicone Heat Transfer Fluid is characterized by its high flash point, high service temperature range, low vapor pressure, high resistance to oxidation, high dielectric strength and hydrophobic nature (insoluble in water). It has a high VTC (viscosity‐to‐temperature coefficient) so its viscosity will lower quickly when heated, allowing for the fluid to be easily pumped.
When compared to Polydimethylsiloxane fluids (PSF‐Fluids), DPDM‐400 exhibits much higher thermal stability. Although it is more expensive, it will provide a very long service life.
- Features
- Formulated for High Temperature Stability for use in laboratory research apparatus and instruments.
- High Oxidation Resistance.
- High Dielectric strength - Dielectric fluid in capacitors.
- High RI Value for optical applications.
- Compatible with virtually all O‐rings, gaskets, valves, seals, and hoses.
Applications & Uses
- Markets
- Applications
High temp heat transfer, high temperature open system baths, high temperature closed system baths, constant temperature baths, high temperature circulating baths, high temp closed loop baths, high temperature heat transfer baths, high temperature fluids for laboratory research apparatus and instruments.
Properties
- Physical Form
- Appearance
- Clear, colorless, odorless fluid
- Typical Properties
- Thermal Properties
- Electrical Properties
| Value | Units | Test Method / Conditions | |
| Specific Gravity | 1.07 | — | — |
| Refractive Index | 1.505 | — | — |
| Pour Point | -30.0 | ºC | — |
| Flash Point | 315.0 | ºC | — |
| Surface Tension | 25.2 | dynes /cm | — |
| Viscosity‐Temp Coefficient | 0.82 | — | — |
| Viscosity (250°C) | 7.0 | cSt | — |
| Viscosity (200°C) | 11.0 | cSt | — |
| Viscosity (100°C) | 46.0 | cSt | — |
| Viscosity (50°C) | 167.0 | cSt | — |
| Viscosity (25°C) | 400.0 | cSt | — |
| Viscosity (0°C) | 1770.0 | cSt | — |
| Viscosity (‐25°C) | 24000.0 | cSt | — |
| Value | Units | Test Method / Conditions | |
| Thermal Conductivity | 0.00032 | g cal/cm.sec.°C | — |
| Coefficient of Thermal Expansion | 0.00073 | cc/cc °C | — |
| Specific Heat (25°C) | 0.35 | cal/g/ °C | — |
| Thermal Gel Time (250ºC) | 1500 - 2000 | hours | — |
| Thermal Gel Time (260ºC) | min. 200 | hours | — |
| Volatility (24 hours, 150°C) | max. 0.3 | % wt loss | — |
| Value | Units | Test Method / Conditions | |
| Dielectric Constant (50Hz) | 2.88 | — | — |
| Breakdown Voltage | min. 50 | KV/2.5mm | — |
| Dissipation Factor (50Hz) | max. 0.0005 | — | — |
Packaging & Availability
- Packaging
1‐gallon (3.78 liters) 4kg net wt. 5‐gallon pail (18.9 liters) 20kg net wt. 55‐gallon drum (208 liters) 200kg net wt.