UOLEN220
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Product Model UOLEN®220
Operating Temperature Range: -10°C to 220°C(14°F to 428°F)
UOLEN®220 is a modified silicone-based synthetic heat transfer medium engineered for exceptional thermal performance. It demonstrates outstanding thermal stability and superior oxidation resistance, making it ideal for demanding high-temperature applications. This product i s designed for long-term use in open constant-temperature systems at temperatures up to 220°C (428°F). In closed systems, it maintains excellent stability at 320°C (608°F), with short-term tolerance reaching 350°C (662°F). Specifically formulated for both open oil baths and closed-loop ultra-high-temperature systems, UOLEN®220 is commonly employed in laboratory high-temperature oil baths and various specialized high-temperature applications.
UOLEN220
Product Features
  • Colorless/pale yellow oil-liquid
  • Odorless, comfortable to operate, and eco-friendly
  • Excellent thermal stability, long service life, suitable for open/closed-loop systems
Working Temperature Range
Open systems: -10°C to 220°C (14°F to 428°F)
Closed systems: -10°C to 320°C (14°F to 608°F)
Application Fields
Experimental research, petrochemicals, biopharmaceuticals, pesticide synthesis and other fields.
Applicable Equipment
Laboratory oil bath, high/low temperature circulation units, jacketed glass reactors, enamel reactors, and mold temperature controllers.
Productpackaging
10L, 25L, 200L, and 1000L drums.
Specifications
Item Characteristic Parameter
Appearance Colorless/pale yellow transparent liquid
Composition Phenylmethyl polysiloxane
Density (at 20°C/68°F) 1.05 g/cm³
Moisture content, max. 100 ppm
Flash point 240°C (464°F)
Auto-ignition point 400°C (752°F)
Viscosity -30°C (-22°F) 317 mm²/s
-20°C (-4°F) 191 mm²/s
-10°C (14°F) 110 mm²/s
0°C (32°F) 72 mm²/s
Pour point <-60°C (-76°F)
Specific heat (at 100°C/212°F) 1.6013 KJ/(kg·k)
Normal boiling point >300°C (572°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 100°C/212°F) 0.00098 K⁻¹
Max. bulk temperature 320°C (608°F)
Max. film temperature 350°C (662°F)
*The above data are obtained from laboratory tests on samples and may vary between batches.

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