Therminol® 66 Heat Transfer Fluid

Therminol 66 is the world’s most popular high temperature, liquid-phase heat transfer fluid. Therminol 66 is pumpable at low temperatures and offers high-temperature thermal stability.

Therminol 66 Temperature Graphic

Product availability: Globally. Contact your local sales representative for more information.

Performance Benefits

  • Experience—Therminol 66 is the most popular high-temperature, liquid-phase heat transfer fluid in the world. No heat transfer fluid material in the world has a higher degree of customer satisfaction than Therminol 66.
  • Proven Fluid—In a wide variety of applications and thousands of systems around the world, Therminol 66 delivers excellent performance.
  • True 650° F (345° C) Performance—Therminol 66 sets the performance standard for high-temperature, liquid-phase fluids. Users can expect many years of reliable, trouble-free operation even when operating continuously at the recommended maximum temperature.
  • Fouling Resistant—Therminol 66 is specifically engineered to resist solids formation and system fouling, providing more reliable operation and potential cost savings.

Product Documents

SDS (All Regions)

Technical Bulletin

Technical Data Sheet