Thermal Fluid Containing a Mix of Diphenylethane and Alkylated Aromatics as an Alternative to Hot Oils for Systems (up to 625°F)
DOWTHERM™ Q is a high-performance thermal fluid for liquid phase systems between -35°C and 330°C (-30°F to 625°F). DOWTHERM™ Q exhibits significantly greater low temperature pumpability in comparison to hot oils.
DOWTHERM™ Q is a suitable replacement for hot oils in a variety of high temperature systems. DOWTHERM™ Q is also noncorrosive to common alloys & metals used in thermal transfer systems.
Temperature: -30°F to 625°F (-35°C to 330°C)
Vapor Pressure: 48.08
Specific Heat: 0.353°F
Viscosity: 48.2
Density: 63.23
Freezing Point: -30°F (-35°C)
Flash Point: 249°F (120°C)
Autoignition: 773°F (412°C)
Primary Chemistry: Mixture of diphenylethane and alkylated aromatics
Best value for moderate temperatures
Better thermal stability than hot oils
Better physical properties than hot oils
No heat tracing to -35 °C
Need pressurization above 265 °C
Inadequate Thermal Stability in Hot Oils
Difficult Thermal Fluid Pumpability at Low Temps
Excessive Pump & Exchanger System Size Requirements
DOWTHERM™ Q is a dynamic, high temperature thermal fluid for use in a wide range of liquid phase systems. Including, but not limited to:
Liquid Natural Gas
Off-shore Platforms
Heat Recovery
Polystyrene & Polyethylene Manufacturing
Topping Units
Asphalt Processing
Oil & 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.
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