Therminol® 72 Heat Transfer Fluid


Therminol 72 is an ultra-high temperature liquid phase heat transfer fluid having great thermal stability. Therminol 72 was developed for use at temperatures up to 380°C (720°F) in liquid phase heat transfer systems.

Performance Benefits

  • High Temperature Stability—Therminol 72 is ideally suited for high temperature heat recovery applications that also need low temperature fluidity.
  • Reduced Operating and Capital Costs—The use of Therminol 72 in high temperature heat transfer systems can result in a significant reduction in capital investment, due to reduced freeze-protection requirements and lower pumping energy costs at low temperatures as compared to other very high temperature alternatives.
  • Nonfouling—Therminol 72 has been carefully formulated to minimize the formation of low boilers and eliminate the risk of insoluble high- boilers formation and fouling. Proper attention to system design and operation within the maximum bulk and film temperatures specified will help to make sure reliable operation.

Typical Properties

PropertyTest MethodTypical Value, Units
AppearanceClear, amber liquid
Composition Mixture of synthetic aromatics
Maximum bulk temperature380 °C (715 °F)
Maximum Film Temperature400 ºC (750 ºF)
Normal Boiling Point271 °C (520 °F)
@ 300 mm2/s (cSt)
@ 2000 mm2/s (cSt)

-10 °C (16 °F)
-14 °C (7 °F)
Autoignition Temperature
DIN 51794

603 ºC (1117 ºF)
585 ºC (1085 ºF)
Flash Point COCASTM D92132 °C (270 °F)
Pour PointISO 3016-18 °C (0 °F)
Viscosity, Kinematic @ 40ºCASTM D 4455.74 cSt, mm2/s
Liquid Density @ 15ºCASTM D 40521084 kg/m3 (9.00 lb/gal)
AcidityASTM D 664<0.2 mg KOH/g
Molecular Weight (Average)190
Moisture Content, maximumASTM E-203200 ppm
Dielectric Constant @ 23°CASTM D-9243.12
Copper CorrosionASTM D 130<<1a
Properties reported here are typical of average lots.

Key Attributes

  • High Temperature Stability
  • Non Fouling
  • Reduced Operating and Capital Costs


  • htf – production of bioalcohol
  • htf – production of biodiesel
  • Chemicals & petrochemicals
  • Gas to liquid (gtl)
  • Lube oil refining
  • Oil recycling
  • Refining
  • Soil / waste treatment
  • Specialty chemicals
  • Styrene
  • Tall oil

Get it now