Dowtherm A
DOWTHERM™ A from The Dow Chemical Company is a heat transfer fluid suitable for non-pressurized liquid phase systems with a maximum temperature of 550 °F (288 °C).
DOWTHERM™ A is a eutectic mixture of two very stable compounds
- biphenyl - C12H10
- diphenyl oxide - C12H10O
with practically the same vapor pressures - suitable as a indirect heat transfer fluid for
- liquid phase systems - 15 oC to 400 oC (60 oF to 750 oF)
- vapor phase systems - 257 oC to 400 oC (495 oF to 750 oF)
Physical properties
- freeze point - 12 oC (56.6 oF)
- boiling point (atmospheric) - 257 oC (494.8 oF)
- flash point (SETA) - 113 oC (236 oF)
- Fire point (C.O.C) - 118 oC (245 oF)
- autoignition temperature - 599 oC (1110 oF)
- density (25 oC, 75 oF) - 1056 kg/m3 (66 lb/ft3)
Dowtherm A - Saturated Liquid Properties Chart
Vapor Pressure, Viscosity, Specific Heat, Thermal Conductivity and Density are indicated in the chart below:
Related Topics
• Heating Systems
Design of heating systems - capacities and design of boilers, pipelines, heat exchangers, expansion systems and more.
• Thermodynamics
Work, heat and energy systems.
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