Therminol 59
Heat Transfer Fluid
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View MSDS
Product Bulletin
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Therminol 59 is a synthetic heat transfer fluid with excellent low temperature pumping characteristics (to -50° F or -45° C) and thermal stability to 600° F (315° C). Performance features of Therminol 59 include:
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- Heating or Cooling Operation - Therminol 59 has surprisingly low viscosity for a high temperature heat transfer fluid. It is ideally suited for combination heating and cooling applications delivering excellent heat transfer rates even at 70° F (20° C). Batch processes will benefit from the excellent cooling performance Therminol 59 delivers.
- Superb Low Temperature Pumpability - Low viscosity at exceptionally cold temperatures makes this an ideal fluid for northern climates. In fact, Therminol 59 was originally developed for use on the North Slope in Alaska, a supreme test of low temperature pumpability.
- Long Life Means Low Cost - Like all the Therminol heat transfer fluids, long fluid life is a given with Therminol 59. Users can expect many years of reliable, trouble-free operation, even when operating continuously at the recommended upper temperature limit of 600° F (315° C). Long life means fewer fluid change-outs and that means low operating costs, which is critical in today’s highly competitive business environment.
Therminol 59 is used in a wide variety of industries, such as:
- Oil and Gas Processing
- Switch Condensers
- Pharmaceuticals Manufacturing
- Specialty and Batch Chemical Production
- Biodiesel
For more information on Therminol 59 systems and applications
e-mail us or contact the Therminol Technical Service Hotline at 1-800-433-6997.
Click here to download the product bulletin containing detailed physical and transport properties for Therminol 59.
Therminol® 59
Heat Transfer Fluid
Operating Range -45 °C to 315 °C (-50 °F to 600 °F)
| Appearance |
Light yellow liquid |
| Composition |
Alkyl substituted aromatic |
| Moisture Content, Maximum |
200 ppm |
| Flash Point (ASTM D-92) |
146 °C (295 °F) |
| Fire Point (ASTM D-92) |
154 °C (310 °F) |
| Autoignition Temperature (ASTM E-659) |
404 °C (760 °F) |
| Kinematic Viscosity, at 40 °C |
4.0 cSt |
| Kinematic Viscosity, at 100 °C |
1.43 cSt |
| Density at 25 °C |
971 kg/m3 (8.10 lb/gal) |
| Specific Gravity (60 °F/60 °F) |
0.979 |
| Coefficient of Thermal Expansion at 200 °C |
0.000946/°C (0.000525/°F) |
| Average Molecular Weight |
207 |
| Pour Point |
-68 °C (-90 °F) |
| Pumpability, at 2000 mm2/s (cSt) |
-49 °C (-56 °F) |
| Pumpability, at 300 mm2/s (cSt) |
-37 °C (-35 °F) |
| 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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17 °C (63 °F) |
20 ft/sec, 1-in tube
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0 °C (32 °F) |
Transition Region Flow (Re = 2000)
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10 ft/sec, 1-in tube
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-16 °C (4 °F) |
20 ft/sec, 1-in tube
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-24 °C (-12 °F) |
| Normal Boiling Point |
289 °C (553 °F) |
| Heat of Vaporization at Max. Use Temp 290°C |
227 kJ/kg (97.5 Btu/lb) |
| Optimum Use Range |
-45 °C to 315 °C
(-50 °F to 600 °F) |
| Maximum Film Temperature |
345 °C (650 °F) |
| Pseudocritical Temperature |
514 °C (957 °F) |
| Pseudocritical Pressure |
22.3 bar (323 psia) |
| Pseudocritical Density |
287 kg/m3 (17.9 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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