mercury oils

Heat Transfer Fluids


Hitherm A Rvn no : 1

Premium heat transfer fluid with additional protection against oxidation

Heatmax AX is made with very thermally and oxidative stable synthetic base fluids. They are further enhanced with proprietary additives that greatly extend their life over normal and other synthetic fluids and provide for exceptional performance and very high operating temperatures in both open and closed systems.
Heatmax AX is non toxic and non hazardous and resist carbon formation.

  • Additional protection against oxidation for applications where moisture, oxygen and copper are present
  • Excellent thermal & oxidation stability which contributes to long life at very high temperatures
  • Very high flash, fire & auto-ignition temperatures for added safety
  • Very low volatility and vapor pressures
  • High heat capacity and thermal conductivity
  • Excellent deposit control to help keep system clean
  • Low viscosity at operating temperatures for improved pumping efficiency
  • Excellent demulsibility and cold flow properties for smother start ups

Heatmax AX is used as a heat transfer medium in so called "open" heat transfer systems where direct contact with air is possible. Most of these systems are seen in temperature regulator units.

Typical performance data

Colour Colourless
Density @15 °C, g/ml 0.87
Viscosity cSt @ 40 °C, cSt 42
Viscosity cSt @ 100 °C, cSt 6.5
Viscosity Index 102
Flash point, °C 230
Pour point, °C -12
Thermal conductivity @ 38 °C, W/m K 0.142
Thermal conductivity @ 316 °C, W/m K 0.127
Heat capacity at 38 °C, KJ/Kg K 1.97
Heat capacity at 316 °C, KJ/Kg K 2.88
Vapour pressure at 316 °C, KPa 11.44


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