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A diaryl alkyl heat transfer fluid that is intended for use in applications that require liquid phase heat transfer.




Product Overview

Unlike other low pressure fluids - including partially hydrogenated terphenyls and dibenzyl toluene fluids, DOWTHERM™ RP fluid degrades primarily to low molecular weight products. DOWTHERM™ RP has a Maximum bulk temperature of 350 °C (660 °F) and a maximum film temperature of 375 °C (710 °F).

Product Specifications

Temperature: 30°F to 660°F
Vapor Pressure: 13.63
Specific Heat: 0.372°F
Viscosity: 249
Density: 65.25
Freezing Point: <-4°F
Flash Point: 381°F
Autoignition: 725°F
Primary Chemistry: Diaryl alkyl 

Features & Benefits

Best thermal stability of any liquid phase fluid
Does not form tar or high boiling degradation products
Liquid phase fluid used in pressure-less or low-pressure systems


Used in production of PET resin, PET film, phenol, polycarbonate, polystyrene, refineries, LNG, offshore platforms

Related Products

DOWTHERM™ Synthetic Thermal Fluids

Dow Chemical produces seven unique DOWTHERM™ Synthetic Organic Fluids each with unique characteristics that offer exceptional thermal stability, longer fluid life and optimum operating economics. All DOWTHERM™ fluids feature vapor pressures lower than steam and can translate into more efficient heat transfer.

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