mercury oils

Heat Transfer Fluids


Hitherm LT Rvn no : 1

Heat transfer fluid based on paraffinic base stock

Hitherm LT is a low viscosity heat transfer fluid intended for use in applications that require liquid phase heat transfer. It can be used in non-pressurized or indirect systems and possesses excellent seal compatibility. Its excellent thermal and oxidation stability provides long service life and clean heat exchanger systems.
Hitherm LT is recommended for use in heat transfer systems where fuel oil, gas or electricity is used to heat a fluid transferring heat to the point of application. In closed systems, Hitherm LT has an optimum maximum use temperature of 250 °C (maximum bulk Tª).

  • Excellent thermal efficiency and stability
  • Long oil life
  • Excellent rust and corrosion protection
  • Ease of pumping and circulation
  • Minimized sludge and deposits

Typical performance data

Density, gr/ml 0.87
Viscosity @ 0 °C, cSt 48
Viscosity @ 40 °C, cSt 10
Viscosity @ 100 °C, cSt 2.5
Viscosity @ 180 °C, cSt 1.64
Flash point, °C 150
Pour point, °C -48
Conradson value, % 0.02
Thermal conductivity @ 40 °C, W/m.K 0.13
Thermal conductivity @ 100 °C, W/m.K 0.13
Specific heat @ 20 °C, Kcal/kg °C 0.45
Thermal expansion coeff. per °C 0.00073


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