DOWTHERM™ Heat Transfer Fluids

A thermally stable synthetic organic heat transfer fluid designed for high temperature heat transfer applications up to 400 °C. Compared to hot oils, it exhibits better thermal stability, heat transfer coefficients and significantly better low-temperature pumpability.

DOWTHERM™ brand heat transfer fluids were first introduced in 1929 by Dow for use at high temperatures when the use of steam or hot water is not practical. For example, DOWTHERM™ A Fluid has set the industry standard for over 70 years – precisely because of its excellent thermal stability in applications up to 400 °C (750 °F.)

The fluids transfer heat energy typically from 260 °C (500 °F) to 400 °C (750 °F), where the alternatives direct fire, electrical conduction and hot water/steam are considered unsafe, uneconomical, or incompatible with the process.