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LISOL® Secutherm M 32/28

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Description

LISOL SECUTHERM M 32/28 – High-Performance Heat Transfer Fluid for Systems up to 315 °C

LISOL SECUTHERM M 32/28 is a high-efficiency heat transfer fluid designed for non-pressurized, closed liquid-phase systems operating at mean temperatures up to 315 °C.
The formulation provides long service life, excellent thermal stability and strong resistance to oxidative and thermal degradation.

The fluid minimizes sludge and coke formation, supports fast system startup due to its favorable viscosity characteristics and offers a low vapor pressure along with robust corrosion resistance.
Thermal behavior such as viscosity, thermal conductivity, density and heat capacity across the temperature range is illustrated in the charts on pages 2–3 of the technical data sheet.

Product Advantages
Excellent temperature stability
Resistant to thermal and oxidative degradation
Long fluid service life
Low top-up requirement
Minimized sludge and coke formation
High thermal efficiency
Low vapor pressure
Corrosion resistance
Fast system start-up
Classified as non-toxic under OSHA, WHMIS and DPD

Typical Applications
Non-pressurized heat transfer systems
Liquid-phase operation up to 315 °C
Industrial heating processes including:
Asphalt production
Shipbuilding
Wood processing
Industrial cleaning/heating equipment
Kilns and furnaces

Specifications/Approvals

Heat transfer fluid for non-pressurized closed systems
(Use according to OEM recommendations)

Typical Properties (SECUTHERM M 32/28)
Color (ASTM D1500): < 0.5
Dropping point (ASTM D5950): –18 °C
Flash point (COC): 225 °C
Fire point: 245 °C
Auto ignition temperature: 352 °C
Viscosity at 40 °C: 35.8 mm²/s
Viscosity at 100 °C: 5.7 mm²/s
Viscosity at 316 °C: 0.7 mm²/s
Average molecular weight: 379
TAN: < 0.1 mg KOH/g
Sulfur content: 0.0326 wt-%
Conradson carbon residue: 0.03 wt-%
Thermal expansion coefficient: 0.0932 %/°C
Distillation:
10 %: 376 °C
50 %: 423 °C
90 %: 471 °C

Key thermal data (page 4):
Density at 15 °C: 0.869 kg/l
Thermal conductivity at 15 °C: 0.143 W/m·K
Heat capacity at 15 °C: 1.89 kJ/kg·K
Vapor pressure at 260 °C: 2.65 kPa

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Datasheets

Produktinformation SECUTHERM M 32/28 (331.48 KB)