DOWTHERM™ A is a synthetic organic heat transfer fluid for liquid- and vapor-phase processes for applications between 60°F and 750°F (15°C to 400°C).
DOWTHERM™ A is a synthetic organic thermal fluid based on a eutectic mixture of two highly stable compounds: biphenyl (C12H10) and diphenyl oxide (C12H10O). DOWTHERM™ A can be used in both liquid- and vapor-phase systems and is suitable for indirect heat transfer applications.
DOWTHERM™ A heat transfer fluid provides excellent thermal transfer in applications between 15°C and 400°C (60°F and 750°F).
Product type: Fluid, heat transfer medium
Temperature: 60°F to 750°F (15°C to 400°C)
Vapor pressure: 152.02
Specific heat: 0.373°F
Viscosity: 4.91
Density: 66.0 lb/ft3
Freezing point: 53.6°F
Flash point: 236°F
Autoignition: 1110°F
Primary Chemistry: Biphenyl and diphenyl oxide
Most stable organic fluid available
Highest use temperature
Liquid and vapor phase
Mixture of diphenyl oxide and diphenyl
Low viscosity to minimize startup problems
Freezing point of 54°F
Can be used without steam tracing in installations protected from the weather
Thermal fluid instability at extremely high temperatures
Single-phase fluid inefficiencies and warehousing
High operating pressure vapor-phase concerns
Insufficient system thermal stability
DOWTHERM™ A Thermal Fluid can be used in a wide variety of heat transfer fluid applications, including but not limited to the following:
Indirect heat transfer
Recovery loops and heat exchanger
Vapor- and liquid-phase systems
Nylon production processes
PET fiber manufacturing processes
PET resin production
Lubricant stock refining
Oil and gas refineries
DOWTHERM™ are best in class heat transfer fluids from Dow. They are designed with dynamic properties to meet the modern industrial application needs. Explore our portfolio of specialized grades for superior performance and extended durability.
High Temperature transfer is critical in a broad range of industries - Dow Chemical provides leading performance thermal fluids that help save money through quality. Learn more in our article here!
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