Dowtherm SR-1 for Industrial Grade and Dowfrost for Food Grade

  • Corrosive
  • ​All salts are very corrosive
  • Long term protection is impossible even with corrosion inhibitors
  • Glycols (without corrosion inhibitors) are corrosive to most metals
  • Oxidize to form acids --> low pH --> acidic pH is corrosive
  • Must use correct type of corrosion inhibitor technology
  • Corrosion damage can occur in less than 2 years
  • Worse for high temperatures and high exposure to air or dissolved O2
Dow heat transfer fluids are properly formulated with corrosion inhibitors and pH buffers which:
  • Passivate metal surfaces to prevent corrosion
  • Neutralize degradation compounds to prevent pH drop
  • Thermoxidatively stable to provide long term protection

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