DOWTHERM® Q
DOWTHERM® Q heat transfer fluid contains a mixture of diphenyl ethane and alkylated aromatics and is designed for use as an alternative to hot oils in liquid-phase heat transfer systems. The normal application range is -35°C to 330°C.
DOWTHERM® Q heat transfer fluid contains a mixture of diphenyl ethane and alkylated aromatics and is designed for use as an alternative to hot oils in liquid-phase heat transfer systems. The normal application range is -35°C to 330°C.
DOWTHERM® Q fluid exhibits better thermal stability than hot oils, particularly noticeable at the upper end of the hot oils' operating range [at temperatures above 260°C]. Furthermore, the pumpability of DOWTHERM® Q fluid at low temperatures is significantly better than that of a typical hot oil.
Across the entire operating range, the low viscosity of DOWTHERM® Q fluid contributes to heat transfer efficiency. The film coefficient at 315°C is 42 percent higher than that of a typical hot oil.
DOWTHERM® Q fluid is also non-corrosive to common metals and alloys, guaranteeing compatibility with most heat transfer systems.
Product specifications
View the properties, applications, and categories of DOWTHERM® Q below. For technical datasheets and safety information, see the downloads.
Technical details
| Chemical name | Mixture of diphenylethane and alkylated aromatics |
|---|---|
| CAS number | 68608-82-2 |
| Manufacturer | Dow® Chemicals |
Properties and applications
| Max. bulk temperature | 330°C (625°F) |
|---|---|
| Max. film temperature | 360°C (675°F) |
| Pressure-filled systems/HTF | No |
| Normal boiling point | 267°C (513°F) |
| Kin. visco 40°C (mm²/s) | 2,5 |
| Kin. visco 100°C (mm²/s) | 0,8 |
| Density 20°C (kg/m³) | 960 |
| Pourpoint °C | -35 |
| Flashpoint °C | 120 |
Categories
Manufacturer: Dow® Chemicals
DOW® Chemicals is one of the world's leading chemical companies, with an impressive history of more than a century of innovation and scientific advancement. From this strong foundation, DOW® develops advanced materials, chemicals, and coatings used in diverse sectors — from construction and automotive to electronics and packaging.
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