Therminol 75
Heat Transfer Fluid
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Product Bulletin
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Therminol 75 synthetic heat transfer fluid is a high temperature liquid phase heat transfer fluid having excellent thermal stability. It was developed for use at temperatures between 175° F and 725° F (80° C - 385° C). Performance features of Therminol 75 include:
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- High Temperature Stability and Performance - Therminol 75 is an exceptionally stable heat transfer fluid. It delivers a heat transfer coefficient which is equivalent or higher than other natural or synthetic liquids in the same boiling range.
- Low Pressure - Therminol 75 is designed for typical liquid phase heat transfer fluid systems which operate at low pressures.
- Critical System Design - Due to the high melting range (104° F - 158° F) of Therminol 75, proper system design is important for reliable operation.
Therminol 75 is used in a wide variety of industries, such as:
For more information on Therminol 75 systems and applications
e-mail us or contact your local sales representative.
Click here to download the product bulletin containing detailed physical and transport properties for Therminol 75.
Therminol® 75
Heat Transfer Fluid
Operating Range 80 °C to 385 °C (175 °F to 725 °F)
| Appearance |
Soft solid melting to yellow liquid |
| Composition |
Terphenyl/quaterphenyl |
| Slurry Range |
165-175 °F |
| Flash Point (ASTM D-92) |
185 °C (365 °F) |
| Fire Point (ASTM D-92) |
227 °C (440 °F) |
| Autoignition Temperature (ASTM D-2155) |
538 °C (1000 °F) |
| Kinematic Viscosity, at
80 °C |
25.1 cSt |
| Kinematic Viscosity, at 100°C |
3.75 cSt |
| Density at 80°C |
1041 kg/m3 (8.69 lb/gal) |
| Coefficient of Thermal Expansion at 200°C |
0.000803/°C
(0.000446/°F) |
| Average Molecular Weight |
230 |
| Minimum Temperatures for |
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Fully Developed Turbulent Flow (Re = 10000)
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10 ft/sec, 1-in tube
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98 °C (209 °F) |
20 ft/sec, 1-in tube
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80 °C (176 °F) |
| Boiling Range at 50mm Hg, 10% |
255 °C (491 °F) |
| Boiling Range at 50mm Hg, 90% |
340 °C (644 °F) |
| Normal Boiling Point |
343 °C (649 °F) |
| Heat of Vaporization at Max. Use Temp
385°C |
236 kJ/kg (101 Btu/lb) |
| Optimum Use Range |
80-385 °C (175-725 °F) |
| Maximum Film Temperature |
410 °C (770 °F) |
| Pseudocritical Temperature |
579 °C (1074 °F) |
| Pseudocritical Pressure |
25.3 bar (367 psia) |
| Pseudocritical Density |
323 kg/m3 (20.2 lb/ft3) |
NOTICE: Although the information and recommendations set forth herein (hereinafter "Information") are presented in good faith and believed to be correct as of the date hereof, Solutia makes no representations or warranties as to the completeness or accuracy thereof. Information is supplied upon the condition that the persons receiving same will make their own determination as to its suitability for their purposes prior to use. In no event will Solutia be responsible for damages of any nature whatsoever resulting from the use of or reliance upon Information or the product to which Information refers. Nothing contained herein is to be construed as a recommendation to use any product, process, equipment or formulation in conflict with any patent, and Solutia makes no representation or warranty, express or implied, that the use thereof will not infringe any patent.
NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OF ANY OTHER NATURE ARE MADE HEREUNDER WITH RESPECT TO INFORMATION OR THE PRODUCT TO WHICH INFORMATION REFERS.
Therminol® is a registered trademark of Solutia Inc.
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