High-and Low-Temperature Heat Transfer Fluids
UOLEN®40
-40°C to 250°C
Product Features
- Transparent liquid, boiling point: 257°C(495°F).
- Suitable for closed-loop equipment systems
- Excellent thermal stability, long service life
Working Temperature Range
UOLEN®400 fluid has a temperature range of 12°C to 257°C (54°F to 495°F)
without overpressure or up to 400°C(752°F with appropriate level of system pressurization
Application Fields
Chemical industry, chemical fiber industry, and special high-temperature scenarios and
other fields.
Applicable Equipment
Thermal oil heaters, spin beam, enamel reactors, and mold temperature controllers
Productpackaging
10L, 25L, 200L, and 1000L drums
Specifications
| Item | Characteristic Parameter | |
| Appearance | Colorless/pale yellow transparent liquid | |
| Composition | Biphenyl/diphenyloxide(DPO) eutectic mixture | |
| Density (at 20°C/68°F) | 1.006 g/cm³ | |
| Moisture content, maximum | 100 ppm | |
| Flash point | ≥123°C (253.4°F) | |
| Auto-ignition point | 617°C (1142.6°F) | |
| Viscosity | 40°C (104°F) | 2.5 mm²/s |
| 100°C (212°F) | 0.98 mm²/s | |
| Pour point | <12°C (53.6°F) | |
| Specific heat (at 100°C/212°F) | 1.78 KJ/(kg·k) | |
| Thermal conductivity (at 100°C/212°F) | 0.1278 (w/m·k) | |
| Normal Boiling Point | 255°C to 258°C (491°F to 496.4°F) | |
| Total acidity | <0.01 mg/kg(KOH) | |
| Sulfur content | <10 ppm | |
| Chlorine content | <10 ppm | |
| Copper strip corrosion (at 100°C/212°F, 3h) | <1a | |
| Expansion coefficient (at 200°C/392°F) | 0.000978 K⁻¹ | |
| Expansion rate (melting) | 6.68% | |
| Max. bulk temperature | 400°C (752°F) | |
| Max. film temperature | 430°C (806°F) | |
| *The above data are obtained from laboratory tests on samples and may vary between batches. | ||
