Knowde Enhanced TDS
Identification & Functionality
- Base Oil Type
- Chemical Family
- Heat Transfer Fluid Type
- Product Type
- CAS No.
- 63148‐52‐7
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Highlights
PM‐125 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), PM‐125 Heat Transfer Fluid exhibits much higher thermal stability and resistance to oxidation. Although it is more expensive, it will provide a much longer service life.
Applications & Uses
- Markets
- Applications
High temp heat transfer, high temperature 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
| Value | Units | Test Method / Conditions | |
| Specific Gravity | 1.07 | — | — |
| Refractive Index | 1.5 | — | — |
| Pour Point | -51.0 | ºC | — |
| Flash Point | 315.0 | ºC | — |
| Surface Tension | 24.5 | dynes /cm | — |
| Volatility (Open System,12 months,150ºC) | 4.0 | % | — |
| Volatility (Open System,12 months,150ºC) | 15.0 | % | — |
| Volatility (Open System,12 months,150ºC) | 1.2 | % | — |
| Volatility (Open System,12 months,150ºC) | 5.5 | % | — |
| Viscosity‐Temp Coefficient | 0.76 | — | — |
| Viscosity (99°C) | 20.0 | cSt | — |
| Viscosity (38°C) | 84.0 | cSt | — |
| Viscosity (25°C) | 125.0 | cSt | — |
| Viscosity (‐29°C) | 22000.0 | cSt | — |
| Value | Units | Test Method / Conditions | |
| Thermal Conductivity (25°C) | 0.00035 | g cal/cm.sec.°C | — |
| Thermal Conductivity (50°C) | 0.00036 | g cal/cm.sec.°C | — |
| Specific Heat (0°C) | 1.418 | kJ/kg K | — |
| Specific Heat (40°C) | 1.498 | kJ/kg K | — |
| Specific Heat (100°C) | 1.615 | kJ/kg K | — |
| Specific Heat (200°C) | 1.812 | kJ/kg K | — |
| Thermal Gel Time (200ºC) | 14.0 | months | — |
| Thermal Gel Time (250ºC) | 1200.0 | hours | — |
| Thermal Gel Time (260ºC) | 200.0 | hours | — |
Technical Details & Test Data
- Temperature Vs Vapour Pressure
At 228°C 11 Pa At 244°C 25 Pa At 263°C 84 Pa At 277°C 155 Pa At 380°C 13332 Pa - Temperature Vs Volume Expansion
‐18°C - 149°C 0.00075 150°C - 204°C 0.00077 205°C - 260°C 0.0008
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.