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Technical Data Sheet
Therminol® 68 Heat Transfer Fluid

  • HTF - bakery
  • HTF - food production
  • Chemicals & PETrochemicals
  • Lube oil refining
  • Oil treatment / sweetening / desulphuriz
  • Plasticizer
  • Polyamide
  • Polymer processing
  • Refining
  • Resins
  • Specialty and batch chemical production
  • Specialty chemicals
  • Waste heat recover + orc
Key Attributes
  • Low Odor
  • Non-corrosive

Product Description

Therminol 68 is a high temperature liquid phase heat transfer fluid with excellent thermal stability. Therminol 68 was developed for use at temperatures up to 360° C (680°F) in liquid phase heat transfer fluid systems. Therminol 68 has a boiling point of 308°C (586°F), but static pressure of about 2 bar should maintain the liquid phase at high temperatures.

Performance Benefits

  • Noncorrosive—This product is noncorrosive to typical heat transfer system materials of construction and has low odor and good handling characteristics.
  • Low Odor—Easy to use

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Typical Properties

PropertyTest MethodTypical Value, Units
Appearance Clear, pale yellow liquid
Composition Mixture of synthetic aromatics
Maximum bulk temperature 360 °C (680 °F)
Maximum film temperature 390 °C (735 °F)
Normal Boiling Point 308 °C (586 °F)
     @300 mm2/s (cSt) -10 °C (14 °F)
     @ 2000 mm2/s (cSt) -26 °C (-14 °F)
Flash Point 
     COCASTM D92155 °C (311 °F)
Autoignition TemperatureDIN 51794400 °C (752 °F)
Pour PointISO 3016-33 °C (-27 °F)
Viscosity, Kinematic 
     @ 40°CASTM D 44513.6 cSt, mm2/s
Liquid Density 
     @ 15°CASTM D 40521030 kg/m3 (8.6 lb/gal)
AcidityASTM D 664<0.2 mg KOH/g
Molecular Weight (Average) 226
Copper CorrosionASTM D 130<<1a
Moisture Content, maximumASTM E-203200 ppm
Dielectric Constant 
     @ 23°CASTM D-9242.8

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its 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. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

10/24/2019 4:30:02 PM