Performance Benefits

  • Very Low Temperature Operation – Therminol VLT has excellent heat transfer performance at extremely low temperatures and offers the benefits of liquid coolant temperature control.
  • Cooling and/or Heating Operation – Therminol VLT allows a single fluid to be used in many general purpose processes where both cooling and heating are required. The properties of Therminol VLT allow the same equipment to be used over its wide range of operation.
  • Easy Operation – Using Therminol VLT avoids problems of using multiple fluids in the same piece of equipment and allows low temperature operation with normal centrifugal pumps.

Typical Properties

AppearanceWater-white liquid
CompositionMethylcyclohexane/trimethylpentane mixture
Maximum bulk temperature175°C (350°F)
Maximum film temperature210°C (410°F)
Normal boiling point99°C (211°F)
Pumpability, at 300 mm2/s (cSt)-126°C (-195°F)
Cloud point-135°C (-211°F)
Autoignition temperature (ASTM E-659)264°C (507°F)
Autoignition temperature (DIN 51794)294°C (562°F)
Pour point (ASTM D-97)-135°C (-211°F)
Minimum liquid temperatures for fully developed turbulent flow (NRe > 10000)
10 ft/sec, 1 in tube (3.048 m/s, 2.54 cm tube)-76°C (-105°F)
20 ft/sec, 1 in tube (6.096 m/s, 2.54 cm tube)-93°C (-135°F)
Minimum liquid temperatures for transitional region flow, (NRe > 2000)
10 ft/sec, 1 in tube (3.048 m/s, 2.54 cm tube)-108°C (-163°F)
20 ft/sec, 1 in tube (6.096 m/s, 2.54 cm tube)-118°C (-180°F)
Coefficient of thermal expansion at 200°C0.001420/°C (0.000786/°F)
Heat of vaporization at max. use temperature252.3 kJ/kg (108.6 Btu/lb)
Kinematic viscosity at 100°C (ASTM D-445)0.41 mm2/s (cSt)
Kinematic viscosity at 40°C (ASTM D-445)0.71 mm2/s (cSt)
Liquid density at 25°C (ASTM D-4052)744 kg/m3 (6.21 lb/gal)
Total acidity (ASTM D-664)< 0.2 mg KOH/g
Average molecular weight102
Pseudocritical temperature299°C (570°F)
Pseudocritical pressure35.0 bar (521.7 psia)
Pseudocritical density267.80 kg/m3 (16.72 lb/ft3)
Copper corrosion (ASTM D-130)<< 1 a
Moisture content, maximum (ASTM E-203)80 ppm
Dielectric constant @ 23°C (ASTM D-924)1.99
Notice: Although the information and recommendations set forth herein are presented in good faith, Eastman Chemical Company and its wholly owned subsidiary Solutia Inc. make no representations or warranties as to the completeness or accuracy thereof. You must make your own determination of their suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. Nothing contained herein is to be construed as a recommendation to use any product, process, equipment, or formulation in conflict with any patent, and we make no representations or warranties, 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 AND NOTHING HEREIN WAIVES ANY OF THE SELLER'S CONDITIONS OF SALE.

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